President Joe Biden said he would use force as a last resort to prevent Iran from getting a nuclear weapon as he began a trip to the Middle East.

Speaking in an interview with Israel’s Channel 12 TV that was recorded before he left Washington on Tuesday but aired on Wednesday, Biden said he would keep Iran’s Islamic Revolutionary Guard Corps (IRGC) on the U.S. Foreign Terrorist Organizations (FTO) list even if that killed off the 2015 Iran nuclear deal.