Saudi Arabia’s King Salman slammed Iran over recent attacks targeting the kingdom, describing the incidents on Saturday in a speech before Muslim leaders gathered in Mecca as “terrorist acts” that threaten global energy supplies.

Rising tensions in the Gulf threaten to undercut the political dominance of Iraq’s Shiite militias as they tone down their anti-American rhetoric to avoid being targeted by the US but also seek to maintain close ties with Tehran.

U.S. forces have quietly sent at least 30 suspected foreign Islamic State fighters captured in Syria last year and in late 2017 to stand trial in Iraq, interviews with the men, Iraqi sources and court documents show.