Why Trump-Putin talks unlikely to bring rapid end to Ukraine war

Negotiations underway as fears grow

Live updates as fears grow that Russia's assault on Ukraine is escalating. USA Today reporters offer ongoing coverage from Kyiv and Moscow.

President Putin's order to mobilise hundreds of thousands of men has sparked protests and a flood of Russian men heading for the borders.

President Volodymyr Zelenskyy said Russian forces are "cannibalising" the Zaporizhia power plant and hitting Kyiv with phosphorus missiles.

The US and European Union are working on tougher sanctions, with President Biden saying that Russia may be willing to use nuclear weapons.