President Donald Trump speaks in the Diplomatic Room of the White House in Washington, Sunday, Oct. 27, 2019. (AP Photo/Andrew Harnik)
PHOTO: Andrew Harnik/AP
President Donald Trump speaks in the Diplomatic Room of the White House in Washington, Sunday, Oct. 27, 2019. (AP Photo/Andrew Harnik)
Now playing
02:17
Trump announces ISIS leader al-Baghdadi is dead
PHOTO: CNN
Now playing
03:04
Avlon: Pence's op-ed is 'way worse than Stockholm syndrome'
PHOTO: CNN
Now playing
01:35
See what security looks like outside US Capitol
PHOTO: Gov. Cuomo's office
Now playing
03:35
Gov. Andrew Cuomo addresses women's allegations
Cuomo
PHOTO: Gov. Cuomo's Office
Cuomo
Now playing
00:56
Cuomo says he has no plans to resign
Now playing
04:51
Elected Republican who supports Biden's bill speaks out
President Joe Biden speaks during a meeting about cancer in the Oval Office of the White House, Wednesday, March 3, 2021, in Washington. (AP Photo/Alex Brandon)
PHOTO: Alex Brandon/AP
President Joe Biden speaks during a meeting about cancer in the Oval Office of the White House, Wednesday, March 3, 2021, in Washington. (AP Photo/Alex Brandon)
Now playing
01:20
'Neanderthal thinking': Biden on states lifting mask restrictions
PHOTO: CNN/Getty
Now playing
02:10
'Highly misleading at best': Dale reacts to Pence's op-ed
Commanding General District of Columbia National Guard Major General William J. Walker testifies before the Senate Homeland Security and Governmental Affairs/Rules and Administration hearing to examine the January 6, 2021 attack on the US Capitol on Capitol Hill on March 3, 2021 in Washington, DC. (Photo by Greg Nash / POOL / AFP) (Photo by GREG NASH/POOL/AFP via Getty Images)
PHOTO: GREG NASH/POOL/AFP via Getty Images
Commanding General District of Columbia National Guard Major General William J. Walker testifies before the Senate Homeland Security and Governmental Affairs/Rules and Administration hearing to examine the January 6, 2021 attack on the US Capitol on Capitol Hill on March 3, 2021 in Washington, DC. (Photo by Greg Nash / POOL / AFP) (Photo by GREG NASH/POOL/AFP via Getty Images)
Now playing
03:01
DC National Guard commander: 'Unusual' Pentagon restrictions slowed response to Capitol riot
FBI Director Christopher Wray testifies before the Senate Judiciary Committee on the January 6th insurrection, in the Hart Senate Office Building on Capitol Hill in Washington, DC on March 2, 2021. (Photo by MANDEL NGAN / POOL / AFP) (Photo by MANDEL NGAN/POOL/AFP via Getty Images)
PHOTO: MANDEL NGAN/POOL/AFP via Getty Images
FBI Director Christopher Wray testifies before the Senate Judiciary Committee on the January 6th insurrection, in the Hart Senate Office Building on Capitol Hill in Washington, DC on March 2, 2021. (Photo by MANDEL NGAN / POOL / AFP) (Photo by MANDEL NGAN/POOL/AFP via Getty Images)
Now playing
02:55
Watch FBI director debunk conspiracy theories pushed by Trump supporters
abrams
PHOTO: CNN
abrams
Now playing
00:51
Abrams on voting rights: We're fighting to protect our democracy from domestic enemies
Goya Foods President Robert Unanue speaks at a press conference with Carlos Vecchio, the Venezuelan Ambassador who is recognized by the United States on December 21, 2020 in Doral, Florida. The two held the press conference to discuss details of a recent shipment of humanitarian aid to Venezuela, donated by Goya Foods. (Photo by Joe Raedle/Getty Images)
PHOTO: Joe Raedle/Getty Images
Goya Foods President Robert Unanue speaks at a press conference with Carlos Vecchio, the Venezuelan Ambassador who is recognized by the United States on December 21, 2020 in Doral, Florida. The two held the press conference to discuss details of a recent shipment of humanitarian aid to Venezuela, donated by Goya Foods. (Photo by Joe Raedle/Getty Images)
Now playing
03:24
Goya CEO under fire for false Trump election claims
Rep. Adam Kinzinger (R-IL) speaks to CNN's Alisyn Camerota about why he thinks that the Republican Party will move on from former President Donald Trump.
PHOTO: CNN
Rep. Adam Kinzinger (R-IL) speaks to CNN's Alisyn Camerota about why he thinks that the Republican Party will move on from former President Donald Trump.
Now playing
02:03
Kinzinger: Trump is a loser and we will move on
Now playing
04:17
NYC mayor says Gov. Cuomo should resign if allegations are true
NEW YORK, NY - JULY 23: New York Gov. Andrew Cuomo speaks during the daily media briefing at the Office of the Governor of the State of New York on July 23, 2020 in New York City. The Governor said the state liquor authority has suspended 27 bar and restaurant alcohol licenses for violations of social distancing rules as public officials try to keep the coronavirus outbreak under control. (Photo by Jeenah Moon/Getty Images)
PHOTO: Jeenah Moon/Getty Images
NEW YORK, NY - JULY 23: New York Gov. Andrew Cuomo speaks during the daily media briefing at the Office of the Governor of the State of New York on July 23, 2020 in New York City. The Governor said the state liquor authority has suspended 27 bar and restaurant alcohol licenses for violations of social distancing rules as public officials try to keep the coronavirus outbreak under control. (Photo by Jeenah Moon/Getty Images)
Now playing
02:29
NYT: Third woman comes forward against Gov. Andrew Cuomo
WASHINGTON, DC - MAY 25: U.S. President Donald Trump and first lady Melania Trump depart the White House for Baltimore, Maryland on May 25, 2020 in Washington, DC. The Trumps will attend a Memorial Day ceremony at the Fort McHenry National Monument and Historic Shrine despite objections by Baltimore Mayor Bernard C. "Jack" Young, whose residents remain under a stay-at-home order due to the coronavirus. (Photo by Sarah Silbiger/Getty Images)
PHOTO: Sarah Silbiger/Getty Images North America/Getty Images
WASHINGTON, DC - MAY 25: U.S. President Donald Trump and first lady Melania Trump depart the White House for Baltimore, Maryland on May 25, 2020 in Washington, DC. The Trumps will attend a Memorial Day ceremony at the Fort McHenry National Monument and Historic Shrine despite objections by Baltimore Mayor Bernard C. "Jack" Young, whose residents remain under a stay-at-home order due to the coronavirus. (Photo by Sarah Silbiger/Getty Images)
Now playing
02:10
Trump got vaccinated in secret. Here's why this matters

Editor’s Note: Peter Bergen is CNN’s national security analyst, a vice president at New America and a professor of practice at Arizona State University. His new book, “Trump and His Generals: The Cost of Chaos,” will be published in December. The opinions expressed in this commentary are his own. View more opinion articles at CNN.

(CNN) —  

President Donald Trump can certainly take a victory lap for the operation that killed the leader of ISIS, Abu Bakr al-Baghdadi. Prior to his death, Baghdadi had declared ISIS a “caliphate,” as his terrorist army stormed across Syria and Iraq, seizing territory the size of Portugal and ruling over some 8 million subjects.

At Trump’s Sunday news conference, he said the ISIS leader was also personally responsible for the death of American aid worker Kayla Mueller. This appears to be the first official US acknowledgment of Baghdadi’s role in her death, as ISIS had claimed that she had died in a Jordanian airstrike in 2015. White House national security adviser Robert O’Brien told NBC the operation that killed Baghdadi was named after Mueller.

01:57 - Source: CNN
ICC to investigate alleged war crimes by Israel and Hamas
FILE- In this Nov. 7, 2019 file photo, the International Criminal Court, or ICC, is seen in The Hague, Netherlands. The Prosecutor of the International Criminal Court said Wednesday, March 3, 2021 that she has launched an investigation into alleged crimes in the Palestinian territories. Fatou Bensouda said in a statement the probe will be conducted "independently, impartially and objectively, without fear or favor."(AP Photo/Peter Dejong, File)
PHOTO: Peter Dejong/AP
FILE- In this Nov. 7, 2019 file photo, the International Criminal Court, or ICC, is seen in The Hague, Netherlands. The Prosecutor of the International Criminal Court said Wednesday, March 3, 2021 that she has launched an investigation into alleged crimes in the Palestinian territories. Fatou Bensouda said in a statement the probe will be conducted "independently, impartially and objectively, without fear or favor."(AP Photo/Peter Dejong, File)
Now playing
01:57
ICC to investigate alleged war crimes by Israel and Hamas
Attorney-General Christian Porter speaks during a media conference on March 03, 2021 in Perth, Australia. Attorney-General Christian Porter has publicly confirmed he is the cabinet minister named in a historical rape allegation from 1988 which came to light in the last week and has emphatically denied the allegations.
PHOTO: Paul Kane/Getty Images
Attorney-General Christian Porter speaks during a media conference on March 03, 2021 in Perth, Australia. Attorney-General Christian Porter has publicly confirmed he is the cabinet minister named in a historical rape allegation from 1988 which came to light in the last week and has emphatically denied the allegations.
Now playing
02:25
Australian Attorney General denies historical rape allegation
Now playing
03:08
Cuba aims to produce its own Covid-19 vaccine
Police shoot stun grenades at Arab Israelis protesting an increase in gang violence in their towns.
PHOTO: CNN
Police shoot stun grenades at Arab Israelis protesting an increase in gang violence in their towns.
Now playing
04:18
Police shoot stun grenades at peaceful Arab-Israeli protesters
Mount Sinabung in Indonesia erupted on March 2, launching a cloud of ash and dust several kilometers into the sky. No one was injured in the eruption but authorities have warned people to stay away from the crater.
PHOTO: olcanological Survey of Indonesia via Reuters
Mount Sinabung in Indonesia erupted on March 2, launching a cloud of ash and dust several kilometers into the sky. No one was injured in the eruption but authorities have warned people to stay away from the crater.
Now playing
00:40
See this volcano in Indonesia erupt
New satellite images taken by Maxar show that North Korea sometime in the past year built a structure that may be intended to obscure entrances to an underground facility where nuclear weapons or nuclear weapons components are stored.
PHOTO: Courtesy Maxar
New satellite images taken by Maxar show that North Korea sometime in the past year built a structure that may be intended to obscure entrances to an underground facility where nuclear weapons or nuclear weapons components are stored.
Now playing
01:47
See images US intelligence claims is a secret weapons site
nigeria kidnapped schoolgirls released Busari pkg intl ldn vpx_00000423.png
nigeria kidnapped schoolgirls released Busari pkg intl ldn vpx_00000423.png
Now playing
02:09
Tears of joy and relief as 279 Nigerian schoolgirls return home
Protesters take cover behind homemade shields as tear gas is fired during a demonstration against the military coup in Yangon on March 1, 2021. (Photo by STR / AFP) (Photo by STR/AFP via Getty Images)
PHOTO: STR/AFP/AFP via Getty Images
Protesters take cover behind homemade shields as tear gas is fired during a demonstration against the military coup in Yangon on March 1, 2021. (Photo by STR / AFP) (Photo by STR/AFP via Getty Images)
Now playing
02:16
Footage shows tear gas, flash bangs used on protesters in Myanmar
01 rivers migrants pkg 02282021
PHOTO: CNN
01 rivers migrants pkg 02282021
Now playing
04:41
CNN correspondent speaks to migrants making dangerous journey to US
PARIS, FRANCE - MARCH 01: Former French President Nicolas Sarkozy leaves court after being found guilty of corruption and influence-peddling on March 01, 2021 in Paris, France. Mr. Sarkozy is only the second French president in modern times to have been convicted, after the conviction of former President Jacques Chirac in 2011.  (Photo by Kiran Ridley/Getty Images)
PHOTO: Kiran Ridley/Getty Images
PARIS, FRANCE - MARCH 01: Former French President Nicolas Sarkozy leaves court after being found guilty of corruption and influence-peddling on March 01, 2021 in Paris, France. Mr. Sarkozy is only the second French president in modern times to have been convicted, after the conviction of former President Jacques Chirac in 2011. (Photo by Kiran Ridley/Getty Images)
Now playing
03:23
'An earthquake in French politics': CNN reporter on Sarkozy sentence
PHOTO: Isaac Abrack
Now playing
03:00
Hear from schoolgirl who escaped abduction in Nigeria
UK police appealed for help Friday, Feb. 20, 2015, to find three teenage girls who are missing from their homes in London and are believed to be making their way to Syria.

The girls, two of them 15 and one 16, have not been seen since Tuesday, Feb. 17, 2015, when, police say, they took a flight to Istanbul. One has been named as Shamima Begum, 15, who may be traveling under the name of 17-year-old Aklima Begum, and a second as Kadiza Sultana, 16. The third girl is identified as Amira Abase, 15.
PHOTO: Metropolitan Police
UK police appealed for help Friday, Feb. 20, 2015, to find three teenage girls who are missing from their homes in London and are believed to be making their way to Syria. The girls, two of them 15 and one 16, have not been seen since Tuesday, Feb. 17, 2015, when, police say, they took a flight to Istanbul. One has been named as Shamima Begum, 15, who may be traveling under the name of 17-year-old Aklima Begum, and a second as Kadiza Sultana, 16. The third girl is identified as Amira Abase, 15.
Now playing
00:39
Shamima Begum loses legal bid to return home to appeal citizenship revocation
PHOTO: Obtained by CNN
Now playing
08:29
How a religious festival turned into a massacre
Saudi Crown Prince Mohammed bin Salman attends a conference in the Saudi capital Riyadh on October 2018.
PHOTO: FAYEZ NURELDINE/AFP/Getty Images
Saudi Crown Prince Mohammed bin Salman attends a conference in the Saudi capital Riyadh on October 2018.
Now playing
02:10
US intel report: Saudi Crown Prince responsible for approving Khashoggi operation
A Fijian rugby team serenaded workers in the Sydney hotel where they are quarantining.
PHOTO: Costa Argyrous
A Fijian rugby team serenaded workers in the Sydney hotel where they are quarantining.
Now playing
00:45
See Fijian rugby team serenade quarantine staff in Australia

Not surprisingly, many are praising Trump’s success. Gen. Joseph Votel, who led the war against ISIS for three years under Presidents Barack Obama and Trump, and retired in March, emailed me to say, “By any measure this was an important milestone – not just for the campaign but for everyone who was victimized by ISIS under Baghdadi’s leadership. It is a psychological blow to ISIS, and it demonstrates the effort we will go to bring these terrorists to justice.”