Kerry arrives in Moscow to explore Syria peace process in Kremlin talks

By Lesley Wroughton MOSCOW (Reuters) - U.S. Secretary of State John Kerry arrived in Moscow on Tuesday to try and narrow differences with Russian leader Vladimir Putin over the role of Syrian President Bashar al-Assad in any political transition and which rebel groups should be part of peace talks. Kerry will seek to prepare the ground for a third round of talks of world powers on Syria amid doubts over whether a meeting pencilled in for Friday in New York will go ahead. Russia's Foreign Ministr