It comes after US President Donald Trump threatened to impose "severe tariffs" on Russia unless a peace deal was reached with Ukraine

Trump's moves underline his growing disenchantment with Russian President Vladimir Putin over the lack of progress in U.S.-led efforts to secure a ceasefire.

He highlighted that the alliance is now finalizing plans to move these systems quickly in response to some of the heaviest Russian strikes Ukraine has experienced since the start of the full-scale war.

Pentagon officials said details were still being worked out, and experts doubted Mr. Trump’s threat of huge tariffs for Russian trading partners.

A disruption in military assistance to Ukraine, even a relatively short one, could have a disproportionately decisive effect by creating a window of opportunity for Russia.

Donald Trump’s remarks on Ukraine on Monday were far from the biggest announcement the US president could have made. The good news for Kyiv is familiar. Trump has permitted NATO’s other members to buy American arms – a wide range of them,

One of Vladimir Putin's mouthpieces has warned Donald Trump that he is pushing Russia towards nuclear war. After pledging to deliver more weapons to Ukraine - including the prized Patriot air defence systems - the US president rattled the Kremlin further and threatened to unleash additional sanctions if Putin refuses to negotiate a ceasefire deal in 50 days.