President Volodymyr Zelensky says US negotiators floated the idea of Ukraine ceding the Donbas to Russia in exchange for NATO membership for the first time at recent talks, stressing Ukraine would not give up territory but would put a full security package to the public. US-brokered peace talks in Abu Dhabi — the first between Ukraine and Russia in months, mediated by Trump envoys — ended without a major breakthrough, though Zelensky and Secretary of State Marco Rubio called the meetings constructive.