Feb. 28 (UPI) -- President Donald Trump announced Saturday that Iran's supreme leader, Ayatollah Ali Khamenei, was dead after U.S. and Israeli airstrikes on several locations in Iran.

Israeli strikes targeted Tehran's Gandhi hospital and a police station, resulting in casualties and people trapped under debris.

Israeli strikes targeted Tehran's Gandhi hospital and a police station, resulting in casualties and people trapped under debris.

Iran fired missiles at targets in Israel and Gulf Arab states Sunday after vowing massive retaliation for the killing of Supreme Leader Ayatollah Ali Khamenei by the United States and Israel, prompting U.S. President Donald Trump to threaten Tehran against further escalation. Iran acknowledged Khamenei’s death in the joint Israeli-American…

Videos shared on social media show people celebrating in Iran after US President Donald Trump wrote that Supreme Leader Ayatollah Ali Khamenei had been killed in US and Israeli air strikes. An Iranian Foreign Ministry spokesman denied the reports, saying Khamenei was safe.

Ayatollah Ali Khamenei was killed on Saturday in air strikes by Israel and the US.

The strikes are intended to open the "path to Tehran", says Israel.

Iran’s leaders need to ensure regime survival and that was always about more than one man, says James M Dorsey from the S Rajaratnam School of International Studies.

Despite mounting speculation about regime change, analysts warn that without boots on the ground, any meaningful shift in Iran is more likely to stem from internal power dynamics than from external pressure.