A woman lays flowers at Pulkovo International Airport outside St. Petersburg on November 1, 2015. Russia on November 1 mourned its biggest ever air disaster after a passenger jet full of Russian tourists crashed in Egypt's Sinai, killing all 224 people on board. Flags were at half mast on the parliament building, in the Kremlin, and on other official buildings in honour of the victims, most of whom were from Russia's second-largest city of Saint Petersburg. AFP PHOTO / OLGA MALTSEVA (Photo credit should read OLGA MALTSEVA/AFP/Getty Images)
