A video of the attack on Novorossiysk with the Sub Sea Baby drone shows a calm port with several ships before a massive explosion kicks up water and debris.

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.

But part is because Ukraine is keeping secret the methods it hopes will help it regain a winning edge elsewhere. Participants refuse to say how they circumvented the all-seeing eyes and kill-zones of the modern battlefield.

Two days of talks between President Volodymyr Zelensky and allies have brought some progress on security guarantees, but Russia remains opposed to any foreign forces in Ukraine.

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

Ukrainian President Volodymyr Zelenskyy and 34 other countries have formally approved plans to create a compensation body for damages caused by Russia's invasion.

As the fourth anniversary of Russia's full scale invasion approaches, Maxim Timchenko says Russia has repeatedly targeted DTEK's energy grid with "waves of drones, cruise and ballistic missiles" and his company has found it difficult to cope.