WASHINGTON — It’s official.

House Speaker Nancy Pelosi (D-Calif.) formally requested articles of impeachment from the House Judiciary Committee on Thursday, erasing any doubts that the House will proceed to a full impeachment vote in the coming weeks.

“Our democracy is what’s at stake. The president leaves us no choice but to act,” she said Thursday morning. “Today, I’m asking our chairman to proceed with articles of impeachment.”

Pelosi’s announcement means Trump will all but certainly become just the third president to be impeached by the House in U.S. history.

“The facts are uncontested. The president abused his power for his own personal political benefit at the expense of our national security by withholding military aid,” Pelosi said. “The president’s actions have seriously violated the Constitution.”

The big question now is exactly what articles of impeachment House Democrats decide to bring forth. The House Judiciary Committee is responsible for drafting those articles, though Pelosi and Democratic leadership will obviously play a key role in that decision. Pelosi made it clear that Judiciary Committee Chairman Jerry Nadler (D-N.Y.) wouldn’t be the only one involved — her use of “chairmen” signaled that Intelligence Committee Chairman Adam Schiff (D-Calif.) as well as the heads of the House Foreign Affairs and Oversight committees will have a role to play.

There is some internal disagreement within the Democratic caucus about how broad they should go with articles of impeachment. Some — including Nadler — have suggested they should include an obstruction charge pointing back to Special Counsel Robert Mueller’s investigation.

Other Democrats, especially moderates in swing districts who face tough reelections, have pushed to keep the focus narrowly on Ukraine and Trump’s actions there, arguing it’s a simpler story to explain to Americans and a more open-and-shut case. Pelosi was thought to be leaning towards the latter opinion. But in a press conference after her big announcement, she suggested that might not be the case.

“This isn’t about Ukraine. This is about Russia. Who benefited by our withholding of that military assistance? Russia. It was about Russia. Russia is invading Eastern Ukraine,” she said. ”Our adversary in this is Russia. All roads lead to Putin. Understand that.”

Pelosi also said the information House Democrats have dug up on Trump’s behavior towards Ukraine only bolstered their case against him.

“In the other cases we had the obstruction of justice but we didn’t have as much information as to what he was obstructing justice on,” she said.

Later, Pelosi pointed back to Mueller’s investigation to defend against arguments that she’s rushing impeachment.

“We are proceeding in a manner worthy of the Constitution. We feel comfortable with all of the time that has gone into this. Two and a half years since the appointment of Mueller and all that has transpired since then,” she said.

Roughly a dozen witnesses laid out the story of a president who was hell-bent on forcing a foreign country to interfere in his own reelection campaign by announcing damaging investigations against Trump’s Democratic opponents. Trump and his aides spent months working to push Ukraine to investigate a conspiracy theory that they, not Russia, interfered in the 2016 election — and repeatedly called for Ukraine to announce an investigation into former Vice President Joe Biden and his son Hunter, who served on the board of a Ukrainian energy company.

That pressure campaign began with withholding a White House meeting that Ukraine’s president wanted badly until Ukraine agreed to go along with Trump’s demands — a move that multiple witnesses described as a clear quid pro quo on the direct orders of the president. And it culminated in the Trump administration withholding military aid from Ukraine, a key geopolitical ally currently fighting a defensive war against Russia. U.S. Ambassador to the European Union Gordon Sondland explicitly told Ukrainian officials that they wouldn’t get the aid unless they announces investigations into 2016 and the Bidens.

The House Intelligence Committee released a sweeping, 300-page report Tuesday that documents how Trump attempted to pressure Ukraine to roll out probes against his enemies, including by withholding much-needed military assistance in the country’s brutal war against Russia-backed separatists.

The report also says Trump obstructed the Congressional investigation of his activities by ordering his administration to disregard subpoenas, and raised the question of whether Trump committed the crime of witness intimidation against those who were willing to speak against him.