source: The Shah left Iran for exile on January 16, 1979 as the last Persian monarch and in the resulting power vacuum two weeks later Ayatollah Khomeini returned to Tehran to a greeting by several million Iranians.
target: The Shah left Iran for exile on January 16, 1979. He was the last Persian monarch. This resulted in a power vacuum. Two weeks later Ayatollah Khomeini returned to Tehran. He returned to a greeting by several million Iranians.
references: The Shah left Iran for exile on January 16, 1979. He was the last Persian monarch. This resulted in a power vacuum. Two weeks later Ayatollah Khomeini returned to Tehran. He returned to a greeting by several million Iranians.