NPR Staff

House investigators spoke with Laura Cooper, deputy assistant secretary of defense, in October. Cooper is responsible for policy toward Russia and Eastern Europe.

Lt. Col. Alexander Vindman is a foreign affairs expert who serves on the National Security Council. He has been described as having told investigators he worried immediately about the Ukraine affair.

Hill, a well-known specialist on Russia, was said to have told House investigators that she objected to the Ukraine pressure plan — as did her then-boss, John Bolton.

The leader of the State Department's European and Eurasian Bureau was described as having told House investigators that the White House deputized "three amigos" to handle Ukraine policy.

Taylor, brought in to run the U.S. mission in Kyiv after the previous ambassador was recalled early, described a White House strategy to pressure Ukraine in exchange for political help.

Career diplomat Volker was described as being one of "three amigos" deputized to run a shadow foreign policy for Ukraine. He has stepped down from his role at the State Department.

Sondland, a Trump donor who became a comparative newcomer to diplomacy, has been described as central to the president's strategy to pressure Ukraine's government to conduct political investigations.

The former top aide to Secretary of State Mike Pompeo talked behind closed doors with House investigators about the Ukraine affair and why he resigned from his post.

People have been dressing up in costumes inspired by diseases for a long, long time. See if you can ace our quiz.

Twelve candidates are on stage in Westerville, Ohio, on Tuesday night — amid an impeachment inquiry into President Trump. NPR reporters are providing live analysis and fact checks of their remarks.

"You have stolen my dreams, and my childhood, with your empty words. And yet I'm one of the lucky ones," activist Greta Thunberg, 16, tells world leaders.

Ten candidates, including Joe Biden, Elizabeth Warren and Bernie Sanders, take the stage tonight at 8 p.m. Follow NPR Politics reporters for live analysis and fact checks.

Candidates like Bernie Sanders and Elizabeth Warren in the second round of Democratic debates. 

Ten candidates, including former Vice President Joe Biden, are on stage in Miami Thursday. Follow NPR reporters who cover health care, immigration and more as they fact check and analyze the debate.

While you watch the presidential candidates, follow NPR reporters for extra context and fact checks. The two-hour debate begins at 9 p.m. ET, with 10 candidates Wednesday night and 10 on Thursday.

Rare photos and testimonies from 1989 portray a bold youth movement that helped shape where China is today and how the world sees it, in spite of authorities' efforts to erase the memory.

A redacted copy of the Mueller investigation report has been released by the Justice Department. NPR reporters and editors are analyzing and annotating notable excerpts from the document.

Last spring, NPR traveled across the country to speak with teenagers about their many different relationships with guns.

Childish Gambino's "This Is America" and Kacey Musgraves' Golden Hour took top prizes at a ceremony that spread the honors widely.

Last spring, NPR traveled across the country to speak with teenagers about their many different relationships with guns.