US targeting 52 Iranian sites if Tehran attacks Americans: Trump

President Donald Trump warned Saturday that the US is targeting 52 sites in Iran and will hit the "very fast and very hard" if the Islamic republic attacks American personnel or assets.

In a tweet defending Friday's drone strike assassination of a top Iranian general in Iraq, Trump said 52 represents the number of Americans held hostage at the US embassy in Tehran for more than a year starting in late 1979.

Trump said some of these sites are "at a very high level & important to Iran & the Iranian culture, and those targets, and Iran itself, WILL BE HIT VERY FAST AND VERY HARD. The USA wants no more threats!"