Zelensky warns that such conditions could weaken Ukraine's position.
The US aims for a swift resolution to the ongoing conflict.
Security guarantees are crucial for Ukraine's post-war stability.
Briefing: US ties Ukraine security guarantees to Donbas withdrawal, Zelensky says
Strategic angle: Ukrainian President Volodomyr Zelensky stated that the US is linking security guarantees to Ukraine's cession of the Russian-occupied Donbas region.