The US secretary of state, Marco Rubio, has called on Russia to accept a 30-day ceasefire alongside Ukraine, telling leaders in the Kremlin that the 'ball is in Russia's court'. Rubio said a ceasefire would pave the way for immediate negotiations between Ukraine and Russia to end more than three years of fighting. Rubio was flanked by the national security adviser, Mike Waltz, who said the Ukrainians shared Donald Trump's vision for peace and sought to end the war

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