WASHINGTON, Sept 2 (Reuters) - President Donald Trump said on Wednesday that the renewed U.S. campaign against Iran would not continue for "too long" after the biggest exchange of fire between Tehran and Washington since July. Trump told reporters in the Oval Office that Iran was trying to build a rocket that drops mines and the U.S. had destroyed it. He also said Iran had been working to restore its radar and missile systems, which were also targeted in the U.S. strikes.

Donald Trump threatened to hit Iran "hard" after the two foes traded fire for the first time in over a month, while Iran's president warned that more fighting with the US was not…

US President Donald Trump threatened on Monday to hit Iran "hard" after the two foes traded fire for the first time in weeks, as his Treasury secretary vowed to keep up a pressure…