The Pantsyr S-1 air defence missile system (NATO name SA-22 Greyhound) is seen atop the Russian Defence Ministry headquarters in Moscow on May 5, 2026, few days ahead of the Victory Day military parade, to be held at Red Square on May 9. Russia declared on May 4 a unilateral ceasefire with Ukraine between May 8-9, when Moscow marks its annual World War II Victory Day commemorations, and threatened a "massive missile strike" on Kyiv if Ukraine violated it. (Photo by Alexander NEMENOV / AFP via Getty Images)