Ukraine obtains classified data on Russia's newest nuclear submarine, intelligence claims * 'Productive' phone call with Trump focused on ending war, sanctions, drone production, Zelensky says * Three Nordic countries to fund $500 million in US weapons for Ukraine * Russia considers air truce proposal to Trump without ending war,

Former President Dmitry Medvedev, who often issues threats on social media, told the world to "expect further steps" following the move.