Trump says damage to Iran's nuclear sites is 'far below ground level'

In response to the U.S. strikes, House Minority Leader Hakeem Jeffries said Trump "misled the country about his intentions" and did not seek Congressional approval.

"Donald Trump promised to bring peace to the Middle East. He has failed to deliver on that promise," Jeffries said in a statement. "The risk of war has now dramatically increased, and I pray for the safety of our troops in the region who have been put in harm’s way."

Rep. Jim Himes, the ranking member of the House Intelligence Committee, was only notified of the strikes after they had occurred, a source familiar told ABC News.

There was not a formal Gang of Eight briefing, the source added.

-ABC News' Lauren Peller

The United States notified the Israeli government in advance of the strike, an Israeli official told ABC News.

The president also spoke with Israeli Prime Minister Benjamin Netanyahu after the strikes, according to the senior administration official.

-ABC News' Will Gretsky and Rachel Scott

Trump spoke with ABC News' Jonathan Karl and claimed, "Tremendous success tonight."