MIAMI, FLORIDA - FEBRUARY 18:  National Security Adviser John Bolton speaks to the media before the arrival of President Donald Trump during a rally at Florida International University  on February 18, 2019 in Miami, Florida. President Trump is scheduled to speak about  the ongoing crisis in Venezuela. (Photo by Joe Raedle/Getty Images)
Joe Raedle/Getty Images North America/Getty Images
MIAMI, FLORIDA - FEBRUARY 18: National Security Adviser John Bolton speaks to the media before the arrival of President Donald Trump during a rally at Florida International University on February 18, 2019 in Miami, Florida. President Trump is scheduled to speak about the ongoing crisis in Venezuela. (Photo by Joe Raedle/Getty Images)
Now playing
02:05
Bolton: US sending Iran clear and unmistakable message
stacey abrams john kennedy split
POOL
stacey abrams john kennedy split
Now playing
07:39
'Ok, I get the idea': GOP senator cuts off Stacey Abrams on controversial voting law
CNN
Now playing
03:10
Weir on Biden's vow to cut emissions: It's incredibly hard
Now playing
03:05
Was QAnon used by foreign adversaries?
CNN
Now playing
01:28
Buttigieg: It's going to take a national effort to reach Biden's climate goal
Sen. Lisa Murkowski (R-AK) speaks to reporters as she arrives for the continuation of the Senate impeachment trial of President Donald Trump at the U.S. Capitol on January 29, 2020 in Washington, DC. The next phase of the trial, in which senators will be allowed to ask written questions, will extend into tomorrow. (Photo by Mario Tama/Getty Images)
Mario Tama/Getty Images
Sen. Lisa Murkowski (R-AK) speaks to reporters as she arrives for the continuation of the Senate impeachment trial of President Donald Trump at the U.S. Capitol on January 29, 2020 in Washington, DC. The next phase of the trial, in which senators will be allowed to ask written questions, will extend into tomorrow. (Photo by Mario Tama/Getty Images)
Now playing
04:08
Murkowski explains why she's voting for Biden nominee
President Joe Biden, accompanied by Vice President Kamala Harris, speaks Tuesday, April 20, 2021, at the White House in Washington, after former Minneapolis police Officer Derek Chauvin was convicted of murder and manslaughter in the death of George Floyd. (AP Photo/Evan Vucci)
Evan Vucci/AP
President Joe Biden, accompanied by Vice President Kamala Harris, speaks Tuesday, April 20, 2021, at the White House in Washington, after former Minneapolis police Officer Derek Chauvin was convicted of murder and manslaughter in the death of George Floyd. (AP Photo/Evan Vucci)
Now playing
03:01
'A step forward': Biden speaks after Chauvin's guilty verdict
CNN's Eli Honig explains how much time former police officer Derek Chauvin, 45, could face after he was convicted of second-degree unintentional murder, third-degree murder and second-degree manslaughter in the case of George Floyd.
CNN
CNN's Eli Honig explains how much time former police officer Derek Chauvin, 45, could face after he was convicted of second-degree unintentional murder, third-degree murder and second-degree manslaughter in the case of George Floyd.
Now playing
03:25
Here's the sentence Derek Chauvin could face after guilty verdict
CNN's Van Jones reacts to Attorney General Merrick Garland's announcement that the Justice Department has launched a federal civil probe into policing practices in Minneapolis following the death of George Floyd and the murder convictions for ex-cop Derek Chauvin.
CNN
CNN's Van Jones reacts to Attorney General Merrick Garland's announcement that the Justice Department has launched a federal civil probe into policing practices in Minneapolis following the death of George Floyd and the murder convictions for ex-cop Derek Chauvin.
Now playing
03:08
Van Jones reacts to Justice Department's Minneapolis police probe
CNN
Now playing
03:14
'Performative outrage': Avlon on GOP backlash to Rep. Waters
Two Honduran children found clinging to an island surrounded by a powerful current in the Rio Grande were rescued by Border Patrol agents and taken into custody, the region's top border official said, the latest example of the dangers migrants face as a growing number desperately attempt to reach the US.
U.S. Border Patrol
Two Honduran children found clinging to an island surrounded by a powerful current in the Rio Grande were rescued by Border Patrol agents and taken into custody, the region's top border official said, the latest example of the dangers migrants face as a growing number desperately attempt to reach the US.
Now playing
02:22
See Border Patrol rescue 2 migrant children in Rio Grande
Biden speaks from the Treaty Room in the White House on April 14, 2021 in Washington, DC.
Andrew Harnik/Pool/Getty Images
Biden speaks from the Treaty Room in the White House on April 14, 2021 in Washington, DC.
Now playing
02:59
Enten: Biden is focused on what Americans care about
CNN
Now playing
02:40
Biden says he's praying for 'right verdict' in Chauvin trial
ST. PAUL, MN - NOVEMBER 6:  Former U.S. Vice President Walter Mondale concedes the election to his Republican opponent Norm Coleman November 6, 2002 in St. Paul, Minnesota. Mondale and Coleman were in a race for U.S. Senate that was too close to call the evening before.  (Photo by Mark Erickson/Getty Images)
Mark Erickson/Getty Images
ST. PAUL, MN - NOVEMBER 6: Former U.S. Vice President Walter Mondale concedes the election to his Republican opponent Norm Coleman November 6, 2002 in St. Paul, Minnesota. Mondale and Coleman were in a race for U.S. Senate that was too close to call the evening before. (Photo by Mark Erickson/Getty Images)
Now playing
03:00
Walter Mondale dies at 93
george w bush congress immigration rhetoric cbs intv sot mxp vpx_00000000.png
george w bush congress immigration rhetoric cbs intv sot mxp vpx_00000000.png
Now playing
01:25
Bush calls on Congress to tone down 'harsh rhetoric' on immigration
WASHINGTON, DC - MARCH 23: Sen. Ted Cruz (R-TX) speaks at a Senate Judiciary Committee hearing on "Constitutional and Common Sense Steps to Reduce Gun Violence" on March 23, 2021 in Washington, DC.  Many senators spoke both for and against gun control the day after a shooting in Boulder, Colorado where a gunman opened fire at a grocery store, killing ten people. (Photo by Tasos Katopodis/Getty Images)
Tasos Katopodis/Getty Images
WASHINGTON, DC - MARCH 23: Sen. Ted Cruz (R-TX) speaks at a Senate Judiciary Committee hearing on "Constitutional and Common Sense Steps to Reduce Gun Violence" on March 23, 2021 in Washington, DC. Many senators spoke both for and against gun control the day after a shooting in Boulder, Colorado where a gunman opened fire at a grocery store, killing ten people. (Photo by Tasos Katopodis/Getty Images)
Now playing
03:18
Berman on Cruz's latest tweet: 'The pot calling the kettle violent'
(CNN) —  

The United States is deploying the USS Abraham Lincoln Carrier Strike Group and a bomber task force to the Middle East in response to a “number of troubling and escalatory indications and warnings” from Iran, US national security adviser John Bolton said Sunday.

A US official with direct knowledge of the situation told CNN the threats were against both US maritime and land-based forces in the region. The deployments are aimed specifically at deterring any Iranian military actions, the official added.

In a written statement released by the White House, Bolton said the US was deploying the USS Abraham Lincoln Carrier Strike Group and a bomber task force to the US Central Command region in the Middle East “to send a clear and unmistakable message to the Iranian regime that any attack on United States interests or on those of our allies will be met with unrelenting force.”

02:13 - Source: CNN
US warships send a powerful message to Russia

“The United States is not seeking war with the Iranian regime, but we are fully prepared to respond to any attack, whether by proxy, the Islamic Revolutionary Guard Corps, or regular Iranian forces,” the statement continued.

Two US officials told CNN that the very public statements are aimed at deterring Iran. There is no indication any action by Iran is imminent.

In comments made Sunday night, US Secretary of State Mike Pompeo said the deployments have been in the works for “a little while.”

The guided-missile destroyer USS Bainbridge, right, and the  USS Abraham Lincoln transit the Strait of Gibraltar, entering the Mediterranean Sea, in April.
Seaman Zachary Pearson/US Navy
The guided-missile destroyer USS Bainbridge, right, and the USS Abraham Lincoln transit the Strait of Gibraltar, entering the Mediterranean Sea, in April.

“We will hold the Iranians accountable for attacks on American interests. And the fact that … if those actions take place, if they do by some third-party proxy, a Shiite militia group, the Houthis or Hezbollah, we will hold the Iranian leadership directly accountable for that,” said Pompeo.

The US announcement comes on the heels several recent events that have increased US-Iran tensions, said Nishank Motwani, a visiting fellow at the Asia-Pacific College of Diplomacy in Australia.

Those include the US designating Iran’s Islamic Revolutionary Guard Corps, Tehran’s most powerful military institution, a terrorist organization, and Iran responding with the same designation for the US military’s Central Command, which oversees the Middle East region; and the US eliminating waivers for some countries to buy Iranian oil and avoid US sanctions, Motwani said.

01:17 - Source: CNN
US announces sanctions possible for Iranian oil imports

On the oil issue, Iranian Foreign Minister Javad Zarif said two weeks ago that Iran would continue to sell its oil on world markets and the US should not try to stop it.

“If the United States takes the crazy measure of trying to prevent us from doing that,” Zarif said, “then it should be prepared for the consequences.”

US security officials at that time expressed concern that Tehran could respond asymmetrically by targeting US facilities and personnel around the Middle East.

But Motwani said that would be a bad idea for Tehran.

“I don’t think it’s in Iran’s interest to escalate tensions. It would give the US a reason to take on Iran,” he said.

And that might cause Iran to lose support its trying to maintain among European countries who have stuck to the Iran nuclear deal that US President Donald Trump abandoned.

Zarif, the Iranian foreign minister, said two weeks ago that he believes some members of the Trump administration, but not Trump himself, and some US allies seek a confrontation with Tehran.

Zarif pointed to Israeli Prime Minister Benjamin Netanyahu, Bolton, the crown prince of the United Arab Emirates, Mohamed bin Zayed, and the crown prince of Saudi Arabia, Mohammed bin Salman – dubbing them “the B Team.”

“The B Team is pushing US policy toward a disaster,” Zarif said

“It is not a crisis yet, but it is a dangerous situation. Accidents, plotted accidents, are possible. I wouldn’t discount the B team plotting an accident anywhere in the region particularly as we get closer to the election,” Zarif said.

Motwani noted that Monday’s announcement of the US carrier and bomber deployments came first from Bolton, who has pushed a hardline policy toward Iran.

“The language is stronger, and part of it has to do with the hawkish stance of this administration,” Motwani said.

A US official said acting Secretary of Defense Patrick Shanahan approved the deployments on Sunday because of “clear indications that Iranian and Iranian proxy forces are making preparations to possibly attack US forces in the region (Middle East).”

However, it is routine for the Pentagon to move forces in and out of the Middle East region.

For instance, the US Air Force pulled B-1 bombers from an airbase in Qatar in March after six-month deployment, according to the website of Dyess Air Force Base in Texas, to which the bombers returned.

Four US Air Force F-35As taxi after landing at Al Dhafra Air Base, United Arab Emirates, on April 15, 2019.
Staff Sgt. Christopher Thornbury/USAF
Four US Air Force F-35As taxi after landing at Al Dhafra Air Base, United Arab Emirates, on April 15, 2019.

And the US Navy has been without an aircraft carrier in the Persian Gulf since early April, when the USS John C. Stennis Carrier Strike Group departed to head to the Mediterranean for exercises with the Lincoln Carrier Strike Group, according to the US Naval Institute’s Fleet and Marine Tracker.

But a future carrier movement to the Persian Gulf was likely, and the Lincoln’s move may just be that accelerated.

When the Lincoln and Stennis were in the Mediterranean, it was the first time two carriers operated in that body of water since 2016, and US officials portrayed it at the time as a show of US resolve toward Russia.

Also in the Lincoln strike group are the cruiser USS Leyte Gulf and the guided-missile destroyers USS Bainbridge, USS Mason and USS Nitze, according to a Navy release from early April, which also said a Spanish destroyer would be operating with the strike group for its entire deployment.

Other US deployments in the region include the amphibious assault ship USS Kearsarge and its escorts, which were in the Persian Gulf as of April 29, according to the USNI tracker.

And the Air Force has sent two squadrons of F-35A stealth fighters to the United Arab Emirates in the past month. In late April, those planes saw their first combat, striking ISIS targets in Iraq.

This story has been updated.

CNN’s Liz Turrell and Ryan Browne contributed to this report.