President Donald Trump has issued a stark warning to Iran, threatening to hit dozens of targets in the Islamic Republic “very fast and very hard” if it retaliates for the targeted killing of the head of Iran's elite Quds Force.

The series of tweets came Saturday evening as the White House sent to Congress a formal notification under the War Powers Act of the drone strike on Gen. Qassem Soleimani.

The notification is classified and it isn’t known if a public version will be released.

House Speaker Nancy Pelosi says the classified document “suggests Congress and the American people are being left in the dark about our national security.”