Former DHS secretary rebuts Trump's NATO claims
Former Homeland Security secretary Michael Chertoff tells CNN's Chris Cuomo NATO is more relevant today than it was 10 years ago, despite what President Trump has said in the past.
01:29 - Source: CNN
Trump and NATO 16 videos
Michael Chertoff cuomo primetime
Former DHS secretary rebuts Trump's NATO claims
01:29
Now playing
- Source: CNN
WASHINGTON, DC - JULY 17:  U.S. President Donald Trump talks about his meeting with Russian President Vladimir Putin, during a meeting with House Republicans in the Cabinet Room of the White House on July 17, 2018 in Washington, DC. Following a diplomatic summit in Helsinki, Trump faced harsh criticism after a press conference with Putin where he would not say whether he believed Russia meddled with the 2016 presidential election. (Photo by Mark Wilson/Getty Images)
Trump questions commitment to defend NATO allies
02:18
Now playing
- Source: CNN
Montenegro flag
Montenegro residents laugh off Trump's remarks
02:37
Now playing
- Source: CNN
National Security Advisor John Bolton listens as US President Donald Trump addresses the nation on the situation in Syria April 13, 2018 at the White House in Washington, DC. Trump said strikes on Syria are under way.  / AFP PHOTO / Mandel NGAN        (Photo credit should read MANDEL NGAN/AFP/Getty Images)
Bolton criticized Trump's NATO stance in 2016
00:50
Now playing
- Source: CNN
Trump NATO
Trump: Alliance to NATO remains 'very strong'
01:09
Now playing
- Source: CNN
US President Donald Trump gestures as he addresses a press conference on the second day of the North Atlantic Treaty Organization (NATO) summit in Brussels on July 12, 2018. (Photo by Brendan SMIALOWSKI / AFP)        (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)
Trump explains what he thinks of Putin
00:52
Now playing
- Source: CNN
Trump NATO 2
Trump to reporter: I'm a very stable genius
00:25
Now playing
- Source: CNN
U.S. President Donald Trump speaks during a press conference after a summit of heads of state and government at NATO headquarters in Brussels, Belgium, Thursday, July 12, 2018. NATO leaders gather in Brussels for a two-day summit. (AP Photo/Geert Vanden Wijngaert)
Fact-checking Trump's NATO claims
03:41
Now playing
- Source: CNN
NATO Secretary General Jens Stoltenberg (L), US President Donald Trump (R), NATO Assistant Secretary General for Political Affairs and Security Policy Alejandro Alvargonzalez (2L), NATO Spokesperson Oana Lungescu (3L) and White House Chief of Staff John Kelly (3R) and US Ambassador to NATO Kay Bailey Hutchison (2R) speak at a breakfast meeting at the US chief of mission's residence in Brussels on July 11, 2018, ahead of a NATO (North Atlantic Treaty Organization) summit. Brendan Smialowski/AFP/Getty Images
Trump's NATO comment made his own staff squirm
01:49
Now playing
- Source: CNN
U.S. President Donald Trump attends a meeting of the North Atlantic Council during a summit of heads of state and government at NATO headquarters in Brussels on Wednesday, July 11, 2018. NATO leaders gather in Brussels for a two-day summit to discuss Russia, Iraq and their mission in Afghanistan. (AP Photo/Geert Vanden Wijngaert)
Trump unleashes on allies at NATO summit
02:05
Now playing
- Source: CNN
jens stoltenberg NATO secretary general 1
NATO secretary general: We have to invest more
01:00
Now playing
- Source: CNN
Trump NATO breakfast event Brussels
Trump: Germany held captive by Russia
01:30
Now playing
- Source: CNN
ZAGAN, POLAND - JUNE 18:  A soldier of the Polish Army mans a tank as a NATO flag flies behind during the NATO Noble Jump military exercises of the VJTF forces on June 18, 2015 in Zagan, Poland. The VJTF, the Very High Readiness Joint Task Force, is NATO's response to Russia's annexation of Crimea and the conflict in eastern Ukraine. Troops from Germany, Norway, Belgium, Poland, Czech Republic, Lithuania and Holland were among those taking part today.  (Photo by Sean Gallup/Getty Images)
What's the point of NATO?
01:23
Now playing
- Source: CNN
Amanpour Hutchison
NATO ambassador: Discord music to Putin's ears
02:20
Now playing
- Source: CNN
Angela Merkel building walls NATO Berlin wall_00000000.jpg
Trump blasts NATO allies ahead of summit
02:41
Now playing
- Source: CNN
NATO flag flying at NATO Headquarters Brussels.
What Trump says about NATO and what it actually does
02:23
Now playing
- Source: CNN