Secretary of State Marco Rubio has reportedly issued a memo warning U.S. government officials not to make any statements that could exacerbate tensions in the Middle East.

“Giving rising tensions in the region, Chiefs of Mission and embassies at addressee posts must refrain from public statements, interviews, or social media activity that could in any way inflame regional audiences, prejudice sensitive political issues, or complicate U.S. relationships,” Rubio said in the memo, reported by The Guardian.