Russia’s war in Ukraine continues, despite US President Donald Trump’s promise to end the conflict within 24 hours of his return to office in January. Should Trump succeed in brokering a peace deal, the agreement will have to address the future of Ukraine’s occupied lands.

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.

European leaders said they had agreed on Monday any decisions on potential Ukrainian territorial concessions to Russia could only be made once robust security guarantees were in place which should include a European-led multinational force.

Ukraine’s president met with U.S. negotiators about plans to end the war with Russia. He said he would give up hopes of joining NATO in exchange for security guarantees.

Ukrainian President Volodymyr Zelenskyy said Russia had sent over 450 drones and 30 missiles into Ukraine overnight.

During negotiations with U.S. envoys over a potential Ukraine-Russia peace deal, President Volodymyr Zelenskiy on Sunday offered to drop Ukraine's NATO aspirations. Zelenskiy had said security guarantees from the United States, Europe and others instead of joining NATO was a compromise from Ukraine.