Fresh explosions have been reported in the Iranian capital of Tehran late on Sunday local time after Iran's President warned of "more painful and crushing responses" to Israeli strikes. Footage circulating online on Sunday afternoon Tehran time appear to show smoke rising from buildings in several locations.

Russia has maintained a delicate balancing act in the Middle East for decades, trying to navigate its warm relations with Israel even as it has developed strong economic and military ties with Iran.

Araqchi said Tehran had been responding to foreign aggression, and that if this aggression stopped, Iranian reactions would also cease.