First row, from left: Chairman of the Russian Muftis Council Ravil Gainutdin, Moscow Mayor Sergei Sobyanin, President of Tatarstan Rustam Minnikhanov, Head of the Chechen Republic Ramzan Kadyrov, Head of Karachay–Cherkessia Rashid Temrezov and Nizhny Novgorod Governor Valery Shantsev at the ceremony to open the renovated Moscow Cathedral Mosque, which is Europe's largest.