Moscow's grand avenues, like every year in early May, were taken over by the growling of 80-year-old tanks and the smell of gasoline burned by military vehicles. To the delight of many locals, soldiers marched in multiple rehearsals for the May 9 Victory Day Parade in the week leading up to the actual event.

The attacks came a day before a Russian-proposed cease-fire was to take effect and as Moscow prepared to welcome foreign dignitaries for a parade.

Russian President Vladimir Putin led celebrations marking 80th anniversary of the end of World War II with a parade in Moscow's Red Square of 11,000 troops, with World War II-era T-34 tanks alongside advanced weaponry.