The dire financial situation of Ukraine, ahead of what is expected to be a difficult winter with a possible further Russian mobilisation, has reopened the discussion on whether to use Russian frozen assets — raising difficult questions over legality, financial stability and Europe’s leverage in any future peace deal.

BRUSSELS, Belgium — Months after the idea was thought to have been laid to rest, some EU capitals are reviving the push to use 200 billion euros ($233 billion) in Russian assets,…

A letter signed by 122 EU lawmakers from across the political spectrum calls for the controversial debate over immobilised assets to be reopened, as Ukraine faces a budget crunch.…