President Donald Trump arrives via Air Force One at MacDill Air Force Base in Tampa, Fla., Monday, Feb. 6, 2017. He stopped for a visit to the headquarters for U.S. Central Command and U.S. Special Operations Command before returning to Washington. National Security Adviser Michael Flynn is at right, and Joint Chiefs Chairman Gen. Joseph Dunford is second from right.
President Donald Trump arrives via Air Force One at MacDill Air Force Base in Tampa, Fla., Monday, Feb. 6, 2017. He stopped for a visit to the headquarters for U.S. Central Command and U.S. Special Operations Command before returning to Washington. National Security Adviser Michael Flynn is at right, and Joint Chiefs Chairman Gen. Joseph Dunford is second from right. Susan Walsh AP
President Donald Trump arrives via Air Force One at MacDill Air Force Base in Tampa, Fla., Monday, Feb. 6, 2017. He stopped for a visit to the headquarters for U.S. Central Command and U.S. Special Operations Command before returning to Washington. National Security Adviser Michael Flynn is at right, and Joint Chiefs Chairman Gen. Joseph Dunford is second from right. Susan Walsh AP

Opinion: Will President Trump stand behind his red line with Iran?

February 07, 2017 06:00 AM

More Videos

Trump and Putin shake hands at G20 Summit 0:39

Trump and Putin shake hands at G20 Summit

Covfefe, Meryl Streep and North Korea - Remembering some of Trump's most controversial tweets 2:12

Covfefe, Meryl Streep and North Korea - Remembering some of Trump's most controversial tweets

Trump shares video of himself body-slamming CNN on Twitter 0:29

Trump shares video of himself body-slamming CNN on Twitter

Trump talks guns, school safety and DACA at CPAC 1:27

Trump talks guns, school safety and DACA at CPAC

NRA's LaPierre at CPAC: We must harden 'wide open target' schools 1:40

NRA's LaPierre at CPAC: We must harden 'wide open target' schools

A G.O.P. Guide to Mass Shootings 2:24

A G.O.P. Guide to Mass Shootings

Trump holds listening session with Florida high school shooting survivors 2:23

Trump holds listening session with Florida high school shooting survivors

Student walkouts, marches take gun control fight to the streets 1:37

Student walkouts, marches take gun control fight to the streets

Woman destroys her gun in wake of Florida high school shooting 3:45

Woman destroys her gun in wake of Florida high school shooting

Sheriff, NRA spokeswoman, clash at CNN Town Hall 1:21

Sheriff, NRA spokeswoman, clash at CNN Town Hall