Reenactors dressed as World War II (WWII) Soviet Red Army troops take part in a battle reconstruction marking the 72nd anniversary of the breakthrough of Leningrad (St. Petersburg) from the Nazi blockade in WWII on Jan. 18, 2015, in St. Petersburg, Russia. (Xinhua/Lu Jinbo)

Reenactors dressed as World War II (WWII) Soviet Red Army troops take part in a battle reconstruction marking the 72nd anniversary of the breakthrough of Leningrad (St. Petersburg) from the Nazi blockade in WWII on Jan. 18, 2015, in St. Petersburg, Russia. (Xinhua/Lu Jinbo)

Reenactors dressed as World War II (WWII) Soviet Red Army troops take part in a battle reconstruction marking the 72nd anniversary of the breakthrough of Leningrad (St. Petersburg) from the Nazi blockade in WWII on Jan. 18, 2015, in St. Petersburg, Russia. (Xinhua/Lu Jinbo)

Reenactors dressed as World War II (WWII) Soviet Red Army troops take part in a battle reconstruction marking the 72nd anniversary of the breakthrough of Leningrad (St. Petersburg) from the Nazi blockade in WWII on Jan. 18, 2015, in St. Petersburg, Russia. (Xinhua/Lu Jinbo)

Reenactors dressed as World War II (WWII) Soviet Red Army troops take part in a battle reconstruction marking the 72nd anniversary of the breakthrough of Leningrad (St. Petersburg) from the Nazi blockade in WWII on Jan. 18, 2015, in St. Petersburg, Russia. (Xinhua/Lu Jinbo)

Reenactors dressed as World War II (WWII) Soviet Red Army troops take part in a battle reconstruction marking the 72nd anniversary of the breakthrough of Leningrad (St. Petersburg) from the Nazi blockade in WWII on Jan. 18, 2015, in St. Petersburg, Russia. (Xinhua/Lu Jinbo)

Reenactors dressed as World War II (WWII) Soviet Red Army troops take part in a battle reconstruction marking the 72nd anniversary of the breakthrough of Leningrad (St. Petersburg) from the Nazi blockade in WWII on Jan. 18, 2015, in St. Petersburg, Russia. (Xinhua/Lu Jinbo)

Reenactors dressed as World War II (WWII) Soviet Red Army troops take part in a battle reconstruction marking the 72nd anniversary of the breakthrough of Leningrad (St. Petersburg) from the Nazi blockade in WWII on Jan. 18, 2015, in St. Petersburg, Russia. (Xinhua/Lu Jinbo)

Reenactors dressed as World War II (WWII) Soviet Red Army troops take part in a battle reconstruction marking the 72nd anniversary of the breakthrough of Leningrad (St. Petersburg) from the Nazi blockade in WWII on Jan. 18, 2015, in St. Petersburg, Russia. (Xinhua/Lu Jinbo)

Reenactors dressed as World War II (WWII) Soviet Red Army troops take part in a battle reconstruction marking the 72nd anniversary of the breakthrough of Leningrad (St. Petersburg) from the Nazi blockade in WWII on Jan. 18, 2015, in St. Petersburg, Russia. (Xinhua/Lu Jinbo)

Reenactors dressed as World War II (WWII) Soviet Red Army troops take part in a battle reconstruction marking the 72nd anniversary of the breakthrough of Leningrad (St. Petersburg) from the Nazi blockade in WWII on Jan. 18, 2015, in St. Petersburg, Russia. (Xinhua/Lu Jinbo)

Reenactors dressed as World War II (WWII) Soviet Red Army troops take part in a battle reconstruction marking the 72nd anniversary of the breakthrough of Leningrad (St. Petersburg) from the Nazi blockade in WWII on Jan. 18, 2015, in St. Petersburg, Russia. (Xinhua/Lu Jinbo)

Reenactors dressed as World War II (WWII) Soviet Red Army troops take part in a battle reconstruction marking the 72nd anniversary of the breakthrough of Leningrad (St. Petersburg) from the Nazi blockade in WWII on Jan. 18, 2015, in St. Petersburg, Russia. (Xinhua/Lu Jinbo)