Politico

The rocket attack that killed two American service members in northern Iraq late Wednesday was “most likely” carried out by an Iran-backed Shia militia group, the general in charge of U.S. forces in the Middle East told senators on Thursday.

Gen. Frank McKenzie, head of U.S. Central Command, said Kataib Hezbollah is the only such militia group known to have conducted “an indirect fire attack on this scale against U.S. coalition forces in Iraq,” referring to a rocket attack late last year on a military base in Kirkuk that killed a U.S. contractor and nearly led to an all-out war between Washington and Tehran.

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