Putin, Merkel struggle to move past differences in tense meeting

By Andreas Rinke and Denis PinchukSOCHI, Russia (Reuters) - German Chancellor Angela Merkel, on a rare visit to Russia, said that Berlin and Moscow had to keep talking despite their disagreements, but those same differences overshadowed her talks with Russian President Vladimir Putin on Tuesday.At a news conference following a meeting in the Russian Black Sea resort of Sochi, diverging positions were aired over Syria, Ukraine, Russian respect for civil rights, and allegations Moscow is interferi