Nov 13 (Reuters) - Russia on Sunday called for the G20 to stop talking about security and focus on the world's most pressing socio-economic problems, ahead of a summit set to be dominated by Western criticism of Russia's invasion of Ukraine.The G20 - a group of the world's largest economies that make up more than 80% of global GDP - is set to meet on the Indonesian island of Bali this week, with Western leaders including U.S. President Joe Biden expected to use the high-profile forum to slam Russia publicly over the war in Ukraine.Expanding its agenda into areas of peace and security, which many countries are talking about, is not viable.Russia's Foreign Minister Sergei Lavrov will head Russia's delegation to the summit - the first since Moscow invaded Ukraine in February - after the Kremlin said President Vladimir Putin was too busy to attend.Russia said the global food crisis would form a key part of the agenda in Bali, which falls just days before the landmark Black Sea grain deal could expire on Nov. 19."