BORODINO, Russia (Reuters) - President Vladimir Putin made a rousing call for unity among Russia's diverse ethnic and religious groups on Sunday as he led commemorations of a battle 200 years ago that led to the defeat of Napoleon Bonaparte. Standing by a monument at the scene of the 1812 Battle of Borodino, 120 km (75 miles) west of Moscow, Putin delivered a speech extolling the virtues of patriotism that enabled Russia to repel the French army in 1812. ...