The Russian Defense Ministry said it will open a humanitarian corridor for civilians on Monday, but Ukrainian officials said they had not agreed with Russia on a route and leaving would not be safe.

The Russian leader will attend an upcoming regional meeting via teleconference, the Kremlin said. Putin said he got his second COVID-19 vaccine in April.

The Russian leader has touted Sputnik V, as the vaccine is known, but more than half of Russians say they don't want to take it.

It's the first country to approve a COVID-19 vaccine, but it has not finished Phase III trials to assess safety and effectiveness in the general population.