President Joe Biden and former President Donald Trump are set to square off in their first debate of the 2024 cycle Thursday night, and foreign policy could play a big role.

The Biden administration came into power hoping to restart the Iran nuclear deal and sought to fulfill Trump’s planned withdrawal from Afghanistan after 20 years of war. The first one failed and the second, while it occurred, did so despite significant stains, including the deaths of 13 U.S. service members who were killed during a terrorist attack in the final week of the war.