France, Nov. 21 -- President Volodymyr Zelensky has said Ukraine is ready for "constructive" and "honest" work with Washington on a draft plan to end the war, even as key European allies have warned against any peace deal that demands sweeping concessions to Moscow.

The comments followed Zelensky's meeting in Kyiv on Thursday with US Army Secretary Daniel Driscoll, after details were revealed of a US-backed proposal that would require Ukraine to cede the entire Donbas region and sharply reduce the size of its armed forces - conditions many in Europe would see as tantamount to capitulation.

The plan, a 28-point document not yet published in full, envisages Ukraine limiting its army to 600,000 troops and receiving as-yet-undefined "robust...