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Russian President Vladimir Putin speaking in Moscow on Sept. 13. Photo: Mikhail Svetlov/Getty Images

Russian President Vladimir Putin will isolate himself for an undisclosed amount of time after people in his inner circle tested positive for the coronavirus, the Kremlin said Tuesday.

Why it matters: Putin has tested negative for the virus and received his second dose of the Russian coronavirus vaccine, Sputnik V, in April, according to ABC News.

Kremlin spokesman Dmitry Peskov did not tell reporters who among Putin’s associates were infected but said there were several cases.

  • Putin met with Syrian President Bashar al-Assad in Moscow on Monday before deciding to self-isolate, Peskov told reporters.
  • The announcement from the Kremlin came in the readout of Putin’s phone call with Tajikistan's president.

Go deeper: Israel preparing for potential second round of coronavirus booster shots

Go deeper

Updated Dec 15, 2021 - Health

COVID booster gap traps millions of Americans

Data: CDC; Chart: Will Chase/Axios

Health officials are stressing the importance of coronavirus vaccine booster shots as the Omicron variant spreads around the world, but millions of Americans aren't yet eligible for another dose.

Why it matters: Two doses of Pfizer and Moderna's vaccines — or one dose of J&J — aren't very protective against Omicron infection, according to preliminary data, although they likely work much better against severe disease.

  • But some experts warn that giving a booster shot too soon could diminish its effects.
Updated 3 mins ago - Science

Volcanic eruption in Tonga caused "significant" damage

This satellite image of the eruption on Jan. 15 taken by Himawari-8, a Japanese weather satellite operated by Japan Meteorological Agency and released by National Institute of Information and Communications Technology (NICT). Photo: NICT via AP

Significant damage has been reported in Tonga following an undersea volcanic eruption on Saturday, which covered the Pacific nation in ash and cut off communication lines.

Driving the news: The eruption triggered tsunami warnings across Tonga's islands and in other regions, including the West Coast of the U.S. and New Zealand.

Updated 1 hour ago - Politics & Policy

Trump dogs "dull" DeSantis ahead of potential 2024 matchup

Photo illustration: Sarah Grillo/Axios. Photo: Paul Hennessy/SOPA Images/LightRocket via Getty Images

Donald Trump is trashing Ron DeSantis in private as an ingrate with a "dull personality" and no realistic chance of beating him in a potential 2024 showdown, according to sources who've recently talked to the former president about the Florida governor.

Why it matters: The two are among the most popular Republicans in the country, and as the former president eyes another run in 2024, he's irked by DeSantis' popularity and refusal to rule out running against him.