Catch up on key developments and the latest in-depth coverage of Russia's invasion of Ukraine.

Moscow said the long-anticipated visit is coming at the invitation of President Vladimir Putin. The talks are expected to focus on the war in Ukraine, though it wasn't mentioned explicitly.

The United States accused Russia of an "unsafe" and "unprofessional" intercept of its MQ-9 Reaper surveillance drone that forced it to be brought down over the Black Sea this week

Ukraine has long sought fighter jets, though these are old Soviet-made MiG-29s and not the more advanced Western warplanes that Kyiv covets.

The Russians claim the U.S. drone crashed on its own. Either way, it appears to be the most serious incident involving the U.S. and Russian militaries in the volatile region in and around Ukraine.

Ukrainian officials say at least six people were killed in Lviv and other cities in a Russian bombardment that included advanced Kinzhal missiles, which air defenses can't shoot down.

Prime Minister Kaja Kallas has led the former Soviet republic since 2021. She's an outspoken critic of Russian President Vladimir Putin, and a vocal supporter of Ukraine.

Relations between the two countries have collapsed over the Ukraine war, with the U.S. slapping thousands of sanctions on Russia, and militarily, economically and diplomatically supporting Ukraine.

That's the view of Joseph Glauber of the International Food Policy Research Institute. He considers the fear the war would lead to a surge in food prices – and a dramatic worsening of world hunger.