The Trump administration has adopted a foreign policy dramatically different from its predecessors, especially those in the post-Cold War world.

As part of the “America First” slogan, President Trump has decided the U.S. should be less involved with its allies and not spend nearly as much money supporting NATO, for example.

The consistent approach to foreign policy that began around 1991 had extended for the most part through Republican and Democratic administrations — until now.

Here to talk about that is Jeffrey Engel. He is director of the Center for Presidential History at Southern Methodist University and author of "When the World Seemed New: George H.W. Bush and the End of the Cold War."