Even as they have rallied to Volodymyr Zelenskiy's side after his Oval Office clash with Donald Trump, European leaders' approach to the war in Ukraine and the continent's security remains highly dependent on the U.

A US deal that gives Russia more power, and withdraws support from former allies, is likely to cost Washington overall.

Top Trump Cabinet secretaries and national security officials are holding meetings this week to discuss the administration’s next steps on Ukraine – including the prospect of suspending military aid – following the spectacular collapse of Friday’s Oval Office meeting between President Donald Trump and Ukrainian President Volodymr Zelensky.