Vladimir Putin has said Russia will press on with its nearly year-long war. On Tuesday, he accused the West of escalating the conflict and announced Moscow would suspend participation in the New START nuclear arms treaty with Washington.The Russian president said increasingly stringent sanctions on the country “will not succeed” and vowed his country would keep fighting to “systematically” achieve its aims.

Speaking hours later in the capital of NATO ally Poland, Biden pledged that “Ukraine will never be a victory for Russia — never”.