Ukraine will only hold direct talks with Russia once a ceasefire is in place, its President Volodymyr Zelensky said Tuesday, as his US counterpart Donald Trump pushed for a speedy deal to end the three-year Ukraine conflict.

President Volodymyr Zelenskiy said on Tuesday that Ukraine would be ready to hold talks with Russia in any format once a ceasefire is in place and the fighting between Kyiv and Moscow's forces has stopped.

The various reports suggested potential outlines of a U.S. proposal that could include a ceasefire along current frontlines, U.S. recognition of Russia's annexation of Crimea, Russia's relinquishing claims to the four Ukrainian provinces and an international force to monitor a ceasefire.