US State Department spokesperson Matthew Miller has said the United States has been urging countries through its diplomatic engagements to tell Iran that escalation in the Middle East is not in their interest, Reuters reports.

Speaking at a daily briefing, Miller said this was a “critical moment” for the region and that US Secretary of State Antony Blinken was working the phones to help calm the tensions, but also said Washington was preparing for all possibilities.

“One of the points of the engagements that we have had is to urge countries to pass messages to Iran and urge countries to make clear to Iran that it is very much not in their interests to escalate this conflict, that it is very much not in their interest to launch another attack on Israel,” he said.

Miller did not say definitively whether or not Washington’s messages have been disseminated to Iran or through which channel.

“I would expect that some of them would pass that message along and impress that point upon the government of Iran,” he added.