By Simon Lewis POLISH-UKRAINIAN BORDER (Reuters) – U.S. Secretary of State Antony Blinken and Ukrainian Foreign Minister Dmytro Kuleba met on Ukraine’s border with Poland on Saturday to discuss Western efforts to support Ukraine and isolate Russia during the current war, now in its 10th day. Amid tight security, Blinken and Kuleba held talks in a tent on the border where refugees, mostly women and children, were also crossing with their belongings in rolling luggage and backpacks. The two men walked on both sides of a painted line that appeared to mark the end of Polish territory. “The entire …