October 2002 - Chechen rebels seize a theater in Moscow, and hold over 700 people hostage. Russian forces use gas to neutralize resistance; most of the rebels and 120 hostages are killed.
May 2003 - 59 people are killed when two suicide bombers drive a truck full of explosives into a government complex in northern Chechnya.
February 2004 - 40 are killed and 100 injured when a suicide bomber detonates a bomb on a Moscow metro train.
August 24, 2004 - Two Russian passenger planes are blown up almost simultaneously, killing 89
August 31, 2004 - A female suicide bomber kills nine people and herself, and wounds 51 others when she detonates a bomb outside a subway station in northeastern Moscow.
September 1, 2004 - Armed attackers storm a school and herd at least 100 children, parents and teachers -- possibly as many as 400, later revealed to be 1,200 -- into a school in southern Russia where they threatened to kill the children. The hostage takers reportedly demanded the release of more than two dozen prisoners picked up during raids on Chechens in southern Russia in June and a Russian withdrawal all of its forces from Chechnya
April 2007 - Eighteen people are killed when a Russian-made Mi-8 military transport helicopter crashes in Chechnya. Local media reports said the helicopter was shot down by Chechen rebels during a Russian operation.