Hamas and the Houthis vow retaliation for U.S. strikes on Iran, as reaction from most world leaders focuses on dialogue and deescalation.

Iran has vowed a "decisive response" to a large-scale attack conducted by Israel against key sites and personnel associated with the Islamic Republic's nuclear program and military.

U.S. Defense Secretary Pete Hegseth said on Sunday that U.S. military strikes against Iranian nuclear facilities were an incredible and overwhelming success which took months and weeks of positioning to carry out.