A top Senate Democrat signaled that in light of explosion attacks in Kabul that killed at least 11 U.S. Marines and a Navy medic, patience with President Joe Biden’s Afghanistan evacuation strategy is wearing thin.

“As we wait for more details to come in, one thing is clear: We can’t trust the Taliban with Americans’ security,” New Jersey Sen. Bob Menendez, chairman of the Senate Foreign Relations Committee, said in a statement on Thursday.