Sweden's brig Tre Kronor with scarlet sails floats on the Neva river in front of the Hermitage during...
Sweden's brig Tre Kronor with scarlet sails floats on the Neva river in front of the Hermitage during the Scarlet Sails festivities marking school graduation in St. Petersburg, Russia, June 24, 2017. REUTERS/Kai Pfaffenbach