President Donald Trump vowed that Iran ¡°will pay¡± for killing three U.S. soldiers in recent days, even as mediators proposed a new truce with the Middle East war widening further.

¡°Every time Iran kills an American Soldier they will pay for that killing many times over!¡± Trump wrote on social media on Monday.

Earlier, Iran said mediators were in touch with proposals on how to ease hostilities after more than a week of worsening clashes. Tensions remain high and the conflict looked set to expand further after Tehran-backed Houthi militants in Yemen threatened to blockade Saudi Arabia in the Red Sea.