Why It May Not Matter What 2016 Republicans Are Saying About Foreign Policy

History has a tendency to detour presidents away from their campaign pledges on foreign policy.

Hundreds of Cubans and visitors from other countries gather across the street from the newly reopened U.S. Embassy to observe the flag-raising ceremony August 14, 2015 in Havana, Cuba.

Photo by Chip Somodevilla/Getty Images
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“Ripping up the Iran deal is a powerful statement,” cried Texas Senator Ted Cruz to conservatives in Atlanta last weekend. “If you vote for Hillary [Clinton], you are voting for Iran to have nuclear weapons.”

Every top Republican presidential candidate vows to roll back the Iran nuclear deal if elected. Florida Senator Marco Rubio, a son of Cuban refugees, promises to shut down the new U.S. embassy in Cuba. This week, Jeb Bush floated more U.S. ground troops in the Middle East to fight the Islamic State terrorist group, and Wisconsin Governor Scott Walker says he's open to a full-blown re-invasion of Iraq.