Trump does plan to discuss the war in Iran with Xi and Putin, but will try to avoid the issue of Ukraine," AP writes, according to a senior American official who briefed reporters on condition of anonymity. The US president also wants to discuss reaching a tripartite agreement on nuclear stockpiles. The last nuclear weapons agreement between Russia and the US (START III) expired last February. It lifted restrictions on the two largest nuclear arsenals for the first time in more than half a century. Trump rejected Russia's call to extend the bilateral agreement for another year. He supported a "new, improved and modern" agreement that includes China.