President Donald Trump warned on Saturday, Jan. 4, that the United States has set 52 Iranian sites at target of possible strikes if Iran attacks any American people or assets following the United States killing Iranian Maj. Gen. Qassem Soleimani.

“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,” the president said.

“He was already attacking our Embassy, and preparing for additional hits in other locations,” President Trump said, adding, “Iran has been nothing but problems for many years.”

The president then issued his warning against any revenge attack from Iran.

“Let this serve as a WARNING that if Iran strikes any Americans, or American assets, we have targeted 52 Iranian sites (representing the 52 American hostages taken by Iran many years ago), some 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,” he said in a tweet.

“The USA wants no more threats!” President Trump added.

The president’s warning came after Iranian officials threatened to retaliate against the United States in response to Soleimani’s death.

Appearing on CNN on Friday, Iranian Ambassador to the United Nations Majid Takht Ravanchi said, “We can’t just close our eyes to what happened last night. Definitely there will be revenge, a harsh revenge.”

Former CIA Deputy Director Michael Morell said on Friday that Iran is likely to try to kill an American government official or civilians as a retaliatory measure, according to Daily Caller.

U.S. military conducted a strike on Soleimani and his convoy at Baghdad airport in Iraq. President Trump said Friday that he ordered the strike because Soleimani was preparing an “imminent” attack against U.S. interests in the Middle East.

According to U.S. State Department, Soleimani, 62, was responsible for the deaths of 603 U.S. service members since 2003.