Iranian Foreign Minister Abbas Araghchi said Sunday that if the Israeli strikes on Iran stop, then “our responses will also stop.”

Israel unleashed a punishing wave of strikes across the breadth of Iran on Sunday and Tehran hit back with fresh missile barrages, as both sides threatened more devastation in a conflict that appeared to be intensifying.

Smoke and flames filled the sky over Tehran as Israel struck oil and gas facilities in the Iranian capital and targeted more nuclear facilities during attacks that carried on into Sunday after starting two days earlier.

Revolutionary Guards Commander Hossein Salami reported killed. Fears of war rise as nuclear talks stall. See Iranian facilities before and after.

Israel launched blistering attacks on the heart of Iran's nuclear and military structure Friday, deploying warplanes and drones previously smuggled into the country to attack key facilities and kill top generals and scientists -- a barrage it said was necessary before its adversary got any closer to building an atomic weapon.