Ukrainian President Volodymyr Zelensky has rejected any proposal to cede the Donbas region to Russia in exchange for a ceasefire, warning it would serve as a launchpad for future attacks.

His comments come ahead of a Friday summit in Alaska between U.S. President Donald Trump and Russian President Vladimir Putin, where territorial “swaps” are reportedly under discussion.

Russia has recently advanced near Dobropillia, part of a broader summer offensive, while preparing new assaults on multiple fronts.

Zelensky, frustrated at being excluded from the talks, called the meeting a “personal victory” for Putin and warned that any deal made without Kyiv’s involvement would be invalid, the BBC has reported.

Russia currently occupies nearly 20% of Ukraine.