Iran's top diplomat said any decision to target the country's cultural sites would be a "war crime", hours after U.S. President Donald Trump threatened such action in a tweet.

 

"Targeting cultural sites is a WAR CRIME," Mohammad Javad Zarif tweeted in response to a post by Trump warning the U.S. is targeting 52 sites in Iran and will hit them "very fast and very hard" if the Islamic republic attacks American personnel or assets.