Two days of intense negotiations between Ukraine, the U.S. and European officials resulted in clear progress on security guarantees for Ukraine but left significant gaps on the issue of territory, U.S. officials told reporters on Monday.

Donald Trump's envoy will meet the Ukrainian president and European leaders in Berlin to discuss the latest peace plan.

Ukraine‘s President, Volodymyr Zelensky, has said he is willing to sacrifice Kyiv’s longstanding demand for NATO membership in exchange for security guarantees from allies like the U.S, according to a new report.

But Ukraine’s leader griped that overall, the negotiations aimed at ending Kremlin’s deadly aggression aren’t about giving his people a “fair” deal.

BERLIN — Ukrainian President Volodymyr Zelensky on Sunday voiced readiness to drop his country’s bid to join NATO in exchange for Western security guarantees, but rejected the U.S. push for ceding territory to Russia as he held talks with U.S. envoys on ending the war.

Ukraine's president says territory and control of the Zaporizhzhia nuclear power remain unresolved issues in a peace plan.

"Over the past two days, Ukrainian-US negotiations have been constructive and productive, with real progress achieved," Ukrainian secretary Rustem Umerov said

Ukraine’s domestic security service, the SBU, said Monday that it struck a Russian submarine in the Black Sea port of Novorossiysk, causing critical damage to the vessel and effectively disabling it.