European officials are growing concerned that an emerging US-brokered peace deal in Ukraine could be exploited by Russia, paving the way for a reinvasion of territory in the war-battered nation’s eastern Donbas region.
The fear, a main sticking point in recent talks, is that the US plan for a demilitarised zone would give the Kremlin cover to deploy covert forces in the contested area, according to people familiar with the matter. The Kremlin might then use hybrid tactics, including so-called…




