Former U.S. special envoy to Ukraine Kurt Volker testified in an impeachment hearing Tuesday that allegations against Joe Biden and former Ambassador to Ukraine Marie Yovanovitch, which were promoted by former Ukrainian Prosecutor General Yuriy Lutsenko and spread in the U.S. by Rudy Giuliani, are "self-serving and not credible."

Why it matters: These allegations are now at the heart of the impeachment inquiry, as President Trump and Rudy Giuliani have come under scrutiny for working to push Ukraine to investigate Biden for corruption. Volker, who is one of the witnesses called by Republicans, is one of multiple officials who have testified that the allegations against Biden and Yovanovitch are baseless.

Go deeper: Live updates from Volker and Tim Morrison's testimony

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Updated 27 mins ago - Politics & Policy

Unrest in Philadelphia after fatal police shooting of Black man

Demonstrators rally on Tuesday near the location where Walter Wallace was killed by two police officers in Philadelphia, Pennsylvania. Photo: Mark Makela/Getty Images

The Pennsylvania National Guard was mobilized Tuesday during a tense second night of protests in Philadelphia over the fatal police shooting of Walter Wallace, a 27-year-old Black man.

Driving the news: Philadelphia Jim Kenney (D) and Police Commissioner Danielle Outlaw said in a joint statement Monday that police were launching a "full investigation" to answer questions that arose from video that captured part of the incident with police.

1 hour ago - Sports

Los Angeles Dodgers win World Series

Mookie Betts slides home safely to give the Dodgers a 2-1 lead. Photo: Tom Pennington/Getty Images

The Los Angeles Dodgers won their seventh World Series in franchise history with a 3-1 Game 6 victory over the Tampa Bay Rays on Tuesday. Shortstop Corey Seager was named the series MVP.

The big picture: It's the Dodgers' first championship since 1988, though they've won the NL West division in eight straight seasons and reached the World Series three times in the last four years.

Updated 2 hours ago - Politics & Policy

Coronavirus dashboard

Illustration: Sarah Grillo/Axios

  1. Politics: Obama: Trump is "jealous of COVID's media coverage" Axios-Ipsos poll: Federal response has only gotten worse.
  2. Health: Hospitals face a crush — 13 states set single-day case records last week.
  3. Business: Winter threat spurs new surge of startup activity.
  4. Media: Pandemic causes TV providers to lose the most subscribers ever.
  5. States: Nearly two dozen Minnesota cases traced to three Trump campaign events.
  6. World: Putin mandates face masks.