In the shadow of the headquarters of Russia's FSB security service, formerly the home of the Soviet-era KGB, people came to lay flowers this week. Hundreds of roses, hydrangeas and carnations were left around a huge stone on Moscow's Lubyanka Square. The Solovetsky Stone is a memorial to victims of political repression and the thousands who were killed under Soviet leader Joseph Stalin. Many here were remembering relatives who were targeted in the dictator's infamous purges, marking Russia 's