Here's a look at Iran, Israel and reactions from around the world after the U.S. and Israel launched strikes against Iran.

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The Iranian government has announced 40 days of mourning. The country's supreme leader was killed following an attack launched by the U.S. and Israel on Saturday against Iran.

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.

Khamenei, the Islamic Republic's second supreme leader, has been killed. He had held power since 1989, guiding Iran through difficult times — and overseeing the violent suppression of dissent.

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Several leaders voiced support for the operation — but most, including those who stopped short of condemning it, called for restraint moving forward.

Despite sanctions, Iran is one of the world's major oil producers, with much of its crude exported to China.

A piece of crucial intelligence arrived just hours before the attack on a compound in central Tehran.

Iran's surviving leaders are in crisis mode, battling to project security as US and Israel strikes continue.

International shipping is said to have come to a standstill at the strait's entrance, with fears of disruption already pushing up global oil prices.

One British holidaymaker called it "surreal" to see people try to enjoy themselves as smoke rises nearby.

Iran has blamed the US and Israel for the strike; the US is looking into reports of the incident, while the IDF says it is "not aware" of operations in the area.

British military personnel at a base in Bahrain were "within several hundred yards" of a strike, the defence secretary says.

BA and Virgin Atlantic are among major airlines to ground services to the Middle East in light of the attacks.

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Two people were killed and 14 injured, with the suspected gunman, identified by some media outlets, also shot dead.

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