Russia has rejected an international investigation demanded by the European Union into the death of jailed opposition figure Alexei Navalny, as his mother made an emotional plea outside the Siberian gulag where he died for the Kremlin to release his body. "I appeal to you Vladimir Putin, because the solution to this problem depends only on you," Lyudmila Navalnaya told the Russian president in a one-minute video filmed outside the "Polar Wolf" prison camp where her son had been jailed while serv