Allies of Ukraine need to “open up space for meaningful negotiations”, a Cabinet minister has said as talks with the US, Ukrainian and European officials on Donald Trump’s peace plan take place.The Ukrainian delegation said they had held their first meeting with Britain’s national security adviser Jonathan Powell and his French and German counterparts.US, Ukrainian and European counterparts are meeting in Geneva on Sunday, with special envoy Steve Witkoff, army secretary Dan Driscoll and US secretary of state Marco Rubio expected to represent Washington.