A Taliban suicide car bombing in Kabul on Thursday killed a U.S. service member, a Romanian soldier and at least 10 Afghan civilians in a busy diplomatic area that includes the U.S. Embassy — the second such attack this week underscoring Afghan government warnings that a preliminary U.S.-Taliban deal on ending America’s longest war was moving dangerously quickly.

“Peace with a group that is still killing innocent people is meaningless,” Afghan President Ashraf Ghani said in a statement.

A NATO Resolute Support mission statement said the two service members were “killed in action,” without providing details or releasing their names pending notification of their families.