On the 226th day of the war, the Ukrainian President Volodymyr Zelenskyy hit a sensitive nerve with his demand to prevent a Russian use of nuclear weapons with pre-emptive strikes. While the Kremlin is talking about a call for the beginning of the "Third World War", Kyiv assures that Selenskyj was misunderstood when he appeared on the video. Meanwhile, US President Joe Biden sees the threat of a nuclear confrontation after threats from the Kremlin as greater than it has been in 60 years.

All current developments on the war in Ukraine in the stern live blog: