Russia and Ukraine exchanged 146 prisoners of war from each side on Sunday after mediation by the United Arab Emirates, the Russian Defence Ministry and the Ukrainian president said. Canadian Prime Minister Mark Carney expressed support for Ukraine’s calls for security guarantees as part of a potential peace deal with Russia, during a visit to Kyiv, where he met Ukrainian President Volodymyr Zelenskyy on Sunday. Speaking at a news conference, Carney said the guarantees could include international participation: “In Canada’s judgement, it is not realistic that the only security guarantee could be the strength of the Ukrainian Armed Forces… that needs to be buttressed and reinforced.” Carney joined Zelenskyy for a ceremony in central Kyiv to mark Ukrainian Independence Day, which was also attended by the US special envoy for Ukraine, Keith Kellogg. Kellogg met Ukrainian Prime Minister Yulia Svyrydenko, who said they discussed the Ukraine-US minerals agreement as well as security guarantees. United States Vice President JD Vance told the broadcaster NBC that Russia has made “significant concessions” towards a negotiated settlement in its war on Ukraine. “They’ve recognised that they’re not going to be able to install a puppet regime in Kyiv. That was, of course, a major demand at the beginning. And importantly, they’ve acknowledged that there is going to be some security guarantee to the territorial integrity of Ukraine,” Vance said. Russian Minister of Foreign Affairs Sergey Lavrov said in an interview broadcast on Sunday that a group of nations, including UN Security Council members, should be the guarantors of Ukraine’s security.