Speaker Nancy Pelosi Nancy PelosiPowell warns failure to reach COVID-19 deal could 'scar and damage' economy Overnight Defense: House to vote on military justice bill spurred by Vanessa Guillén death | Biden courts veterans after Trump's military controversies Intelligence chief says Congress will get some in-person election security briefings MORE (D-Calif.) on Tuesday night called for an end to “needless provocations” from the Trump administration shorty after Iran claimed responsibility for launching unspecified projectiles at a military base housing U.S. troops in Iraq.

“Closely monitoring the situation following bombings targeting U.S. troops in Iraq,” Pelosi tweeted. “We must ensure the safety of our service members, including ending needless provocations from the Administration and demanding that Iran cease its violence.”

She added that America and the world “cannot afford war.”

Closely monitoring the situation following bombings targeting U.S. troops in Iraq. We must ensure the safety of our servicemembers, including ending needless provocations from the Administration and demanding that Iran cease its violence. America & world cannot afford war. — Nancy Pelosi (@SpeakerPelosi) January 8, 2020

Pelosi had huddled with members of the Democratic Steering Committee on Tuesday in the Capitol, where she was handed a note about the strike in Iraq. She later spoke by phone with Vice President Pence, who briefed her on the attack, according to her spokesman.

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The Pentagon said in a statement that Iran launched more than a "dozen ballistic missiles against U.S. military and coalition forces in Iraq" on Tuesday night. The department said the missiles were "launched from Iran and targeted at least two Iraqi military bases hosting U.S. military and coalition personnel at Al-Assad and Irbil."

The attack came days after Iranian Supreme Leader Ayatollah Ali Khamenei vowed a “harsh retaliation” for the U.S. following the killing of Gen. Qassem Soleimani, a powerful Iranian military official who led the country's elite Quds Force.

Soleimani was killed in a U.S. drone strike on Friday that was approved by President Trump Donald John TrumpBarr criticizes DOJ in speech declaring all agency power 'is invested in the attorney general' Military leaders asked about using heat ray on protesters outside White House: report Powell warns failure to reach COVID-19 deal could 'scar and damage' economy MORE. The president said the operation was an effort by the U.S. "to stop a war" and that there was evidence that Soleimani was plotting attacks against Americans.

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The drone strike fueled concerns about Iranian retaliation among many Americans over the weekend.

Later on Tuesday, White House press secretary Stephanie Grisham Stephanie GrishamIvana Trump on Melania as first lady: 'She's very quiet, and she really doesn't go to too many places' The Hill's 12:30 Report: Trump uses White House as campaign backdrop Coronavirus tests not required for all Melania Trump speech attendees: report MORE said in a statement that Trump had been made aware of reports of attacks on U.S. facilities in Iraq.

"The President has been briefed and is monitoring the situation closely and consulting with his national security team," she added.

Trump has said that the U.S. is prepared to hit 52 Iranian sites "very fast and very hard" if the country retaliated for Soleimani’s death in the U.S. drone strike. He also repeatedly threatened to target cultural sites in Iran in the event of a retaliation.

Mike Lillis contributed.