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President Trump on Thursday walked back his previous threat to close the U.S.-Mexico border this week, telling reporters he is giving Mexico a "1-year warning" to stop illegal immigration and what he calls "massive" amounts of drugs entering the country through the southern border.

"If the drugs don't stop or largely stop, we're gonna put tariffs on Mexico and products, in particular cars. The whole ballgame is cars. If they don't do it, we're gonna tax the cars. And if that doesn't work, we're gonna close the borders."

The backdrop: As Axios' Jonathan Swan reported Thursday morning, Trump was hesitant to follow through on his border threat out of fear of doing anything to disrupt the markets. A source who has been talking to Trump about the border situation told Swan: "He’s very well aware that there’s a commercial trucking component that would be devastating on Mexico and would be hurtful to the United States."

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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