Caucasus Emirate leader Doku Umarov claimed responsibility for the March 29 double suicide attack at subway stations in Moscow that killed 39 people. Umarov claimed the suicide attacks were revenge for a February raid by the FSB and said more attacks inside Russia should be expected.

Bill Roggio is a Senior Fellow at the Foundation for Defense of Democracies and the Editor of FDD's Long War Journal.

Are you a dedicated reader of FDD's Long War Journal? Has our research benefitted you or your team over the years? Support our independent reporting and analysis today by considering a one-time or monthly donation. Thanks for reading! You can make a tax-deductible donation here.


Islamic state



Al shabaab

Boko Haram