The Ukrainian security service claimed a new strike on the Belbek Airfield in Crimea had destroyed hundreds of millions of dollars’ worth of Russian military equipment, including a MiG-31 fighter jet loaded with weapons,

The Kremlin said on Thursday that Russia was preparing for contacts with the United States to get details about U.S. talks with European powers and Ukraine on a possible peace settlement to end the Ukraine conflict.

Putin said at an annual meeting with top military officers that Moscow will move to expand a “buffer security zone” along the border.

U.S. administration officials signaled Monday a peace deal between Russia and Ukraine may be closer than ever.

Ukraine's internal security agency said the attack damaged and disabled a Russian Kilo-class submarine in the port city of Novorossiysk.

Ukrainian "Sub Sea Baby" drones critically damage Russian submarine equipped with Kalibr cruise missiles in Novorossiysk, the Security Service said.

Russian Deputy Foreign Minister Sergey Ryabkov told ABC News during an exclusive interview in Moscow on Monday that he believes the warring parties are close to a deal.

Washington and Kyiv appear to have made notable shifts to secure progress, but big questions remain, not least whether Moscow will once again reject making concessions.