Israel and Iran launched fresh attacks on each other overnight into Sunday, as U.S. President Donald Trump said the conflict could be easily ended while warning Tehran not to strike any U.S. targets.

Iran's elite Revolutionary Guards corps said its top commander, Hossein Salami, was killed and state media reported the unit's headquarters in Tehran had been hit.

Secretary of State Marco Rubio, doubling as Trump’s national security adviser, asserted that the U.S. was “not involved” and that protecting U.S. forces in the region is the Republican administration...