Russian Foreign Minister Sergei Lavrov said on Tuesday that an amended peace plan for Ukraine must reflect the "spirit and letter" of understandings reached between President Vladimir Putin and U.S. President Donald Trump at their Alaska summit.

Amid this opposition, a series of meetings is expected. Today, there will be a meeting between US and Russian officials in Abu Dhabi, and a virtual one between the coalition of the willing, hosted by Keir Starmer and Emmanuel Macron. Ukraine's official also says they expect a meeting between Volodymyr Zelensky and Donald Trump in the next few days.

US army secretary Dan Driscoll is holding talks in Abu Dhabi with Ukraine’s military intelligence chief and a Russian delegation as Washington pushes for a deal to end the Kremlin’s war.

U.S. and Ukrainian officials sought to narrow the gaps between them on Monday over a plan to end the war in Ukraine, after agreeing to modify a U.S. proposal that Kyiv and its European allies saw as a Kremlin wish list.

US President Donald Trump and Russian President Vladimir Putin have spent weeks trading threats to restart nuclear tests, an escalation kicked off by Putin’s boasts about tests of the Poseidon nuclear powered missile in late October.

The United States and Russia have drawn up a plan to end the bitter fighting in Ukraine, which would require major concessions from Kyiv.