Fireworks explode over Sweden's brig Tre Kronor with scarlet sails which floats on the Neva River during...
Fireworks explode over Sweden's brig Tre Kronor with scarlet sails which floats on the Neva River during the Scarlet Sails festivities marking school graduation, in St. Petersburg, Russia, June 24, 2017. REUTERS/Grigory Dukor