The White House on Thursday invited congressional leaders to the Situation Room for a briefing on Iran.

The White House has invited Speaker Nancy Pelosi Nancy PelosiPelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' On The Money: Anxious Democrats push for vote on COVID-19 aid | Pelosi, Mnuchin ready to restart talks | Weekly jobless claims increase | Senate treads close to shutdown deadline Trump signs largely symbolic pre-existing conditions order amid lawsuit MORE (D-Calif.), Senate Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellTrump 'no longer angry' at Romney because of Supreme Court stance On The Money: Anxious Democrats push for vote on COVID-19 aid | Pelosi, Mnuchin ready to restart talks | Weekly jobless claims increase | Senate treads close to shutdown deadline The Hill's Campaign Report: Trump faces backlash after not committing to peaceful transition of power MORE (R-Ky.), Senate Minority Leader Charles Schumer Chuck SchumerPelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' 3 reasons why Biden is misreading the politics of court packing Cruz blocks amended resolution honoring Ginsburg over language about her dying wish MORE (D-N.Y.) and House Minority Leader Kevin McCarthy Kevin Owen McCarthyMcCarthy says there will be a peaceful transition if Biden wins GOP lawmakers distance themselves from Trump comments on transfer of power McCarthy claims protests in Louisville, other cities are 'planned, orchestrated events' MORE (R-Calif.) to attend a briefing at 3 p.m., a source familiar with the matter told The Hill.

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President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE, leaders of the House and Senate Intelligence and Armed Services committees and administration intelligence officials are expected to attend.

Trump tweeted Thursday morning that Iran "made a very big mistake" after the country shot down a U.S. drone, further inflaming tensions between the two nations.

The president later told reporters at the White House that the public “will soon find out” if he plans to strike Iran, but did not elaborate. He left the door open for a military response, though he added he “wants to get out of these endless wars.”

It is unclear yet whether the attack on the drone was intentional, though Trump suggested that the drone was downed by "mistake."

Trump said he has a “feeling that it was a mistake made by somebody who shouldn’t have been doing something that they did.”

U.S. Central Command said in a statement the downing of the drone was an “unprovoked attack.”

Updated at 1:54 p.m.