By Pavel Polityuk and Natalia Zinets LVIV, Ukraine (Reuters) -Russian missiles hit a large Ukrainian base near the border with NATO member Poland on Sunday, killing 35 people and wounding 134, a local official said, in an escalation of the war to the west of the country as intense fighting was reported elsewhere. Russia’s defence ministry said the air strike had destroyed a large amount of weapons supplied by foreign nations that were being stored at the sprawling training facility, and that it had killed “up to 180 foreign mercenaries”. Reuters could not independently verify the casualties re…