Ukraine and Russia concluded the second round of talks in Istanbul. The sides agreed on a new POW exchange of under 25 years old and severely ill soldiers. Kyiv says it handed over to Moscow the list of Ukrainian children illegally deported by Russia.

The head of Ukraine's SBU sec urity service, Lieutenant General Vasyl Malyuk, said on Monday that Kyiv hit 41 aircraft, including Tu-95 and Tu-22 strategic bom bers Russia has used extensively to fire long-range missiles at Ukraine.

Though the knock-on effects are unclear, some military commentators have called the strike Russia's "Pearl Harbor." Hopes for direct peace talks, which resumed Monday, remain low.

Officials from Russia and Ukraine in Istanbul on Monday failed to reach a ceasefire but agreed to exchange more prisoners.

There’s many members of Congress that want us to sanction Russia as strongly as we can,” Johnson told reporters on Monday. “And I’m an advocate of that.”

Russia’s largest commercial bank, Sber, launched a Bitcoin-linked bond that is already available in the OTC market and may soon be listed on the Moscow Stock Exchange.

Russia has not yet responded to Ukraine's memorandum on a complete ceasefire. According to Ukraine's Defense Minister and head of the Ukrainian delegation, Rustem Umerov, it is expected that Moscow will review the document for another week.