Chechen separatist ordered Moscow bomb attack

The Chechen leader Doku Umarov claimed responsibility for suicide bombing in the Russian capital that killed nearly 38 people last week.
Umarov, speaking through an Islamist website, said he had personally ordered the attacks, in which two women exploded bombs in Moscow's busiest metro stations during the morning rush hour.

What is Chechen issue?
The nature of the conflict between Chechnya and Russia is a result of many factors; a tumultuous history between the two neighbours, Islamic fundamentalism, terrorism, Russia’s attempts to dominate the Caucacus regions, oil exploitation, human rights, and international attitudes. The following discussion aims to explain the background and reasons for the perpetuation of the trouble in Chechnya, and explore the reasons for Russia’s military intervention in the region. As well, the discussion will attempt to forecast what the future may hold for Chechnya, and Russia’s relations with it.
“The Chechens are an ethnically distinct, traditionally clan-based group with a long history of resisting Russian expansion in the Northern Caucasus” . The hostility existing between the Chechen people and Russia, however, predates both the Russian republic and the Soviet Union, going back to the late 18th Century, when Russia’s drive to the South, initiated by Peter the Great in 1722, “led to the incorporation first of the Transcaucasus and only later of the rebellious North Caucasus”
(Credit to http://www.oppapers.com)