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Photo: Preston Ehrler/SOPA Images/LightRocket via Getty Images

2020 contender Sen. Bernie Sanders' campaign announced Wednesday that he underwent a medical procedure to insert two stents after blockage was found in an artery.

Why it matters: Senior adviser Jeff Weaver said the 78-year-old candidate would be canceling all campaign events "until further notice," but noted that Sanders was "conversing and in good spirits." The news comes one day after the campaign announced a $25.3 million fundraising haul for Q3, the biggest yet among the wide Democratic field.

What they're saying: In a tweet Wednesday, Sanders said he has "great" staff helping him recover and used the incident to plug his Medicare for All plan.

A tweet previously embedded here has been deleted or was tweeted from an account that has been suspended or deleted.

Go deeper: Bernie Sanders on the issues, in under 500 words

Go deeper

U.S. ambassador to Russia will return home briefly: State Department

John Sullivan, U.S. Ambassador to Russia, during a briefing in Moscow in 2015. Photo: Anton Novoderezhkin/TASS via Getty Images

The State Department said Monday that the U.S. ambassador to Russia, John Sullivan, will now be returning to the United States this week before returning to Moscow "in the coming weeks."

Why this matters: The statement, from a State Department spokesperson, comes just hours after Axios reported that Sullivan had indicated he intended to stand his ground and stay in Russia after the Kremlin “advised” him to return home to talk with his team.

Scoop: Leaked Ukraine memo reveals scope of Russia's aggression

Russian President Vladimir Putin visits a military exposition in Sevastopol, Crimea, in Jan. 2020. Photo: Mikhail Svetlov/Getty Images

Russia has been holding last-minute military exercises near commercial shipping lanes in the Black Sea that threaten to strangle Ukraine's economy, according to an internal document from Ukraine's ministry of defense reviewed by Axios.

Why it matters: With the eyes of the world on the massive buildup of troops in eastern Ukraine, the leaked memo shows Russian forces escalating their presence on all sides of the Ukrainian border.

Elon Musk: Autopilot feature wasn't enabled in fatal Texas crash

Photo: Patrick T. Fallon/Bloomberg via Getty Images

Tesla CEO Elon Musk tweeted on Monday that "data logs recovered so far" show the car's Autopilot feature was not enabled — and it did not have access to "full self-driving mode" — in the deadly crash in Texas involving the company's electric vehicle.

Background: Local investigators said they believed the car was operating without anyone in the driver's seat. At the time of death, one man was in the passenger seat, while another was in the rear seat, KPRC 2 reports.

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