WATCH: Trump warns Iran: US has targeted '52 Iranian sites' and will 'hit very fast and very hard' if needed

President Trump issued a stern warning to Iran Saturday through a series of tweets to deter the country from retaliating after the U.S.-ordered airstrike that killed Iranian general Qassem Soleimani Thursday. "Iran is talking very boldly about targeting certain USA assets as revenge for our ridding the world of their terrorist leader who had just killed an American, & badly wounded many others, not to mention all of the people he had killed over his lifetime, including recently hundreds of Iranian protesters," Trump tweeted. -- More...