Overview

• Islamic State claimed responsibility for the March 22 attack on a Moscow concert hall, resulting in at least 144 deaths.
• Russian President Vladimir Putin links the attack to Ukraine and the West, despite the Islamic State's claim and U.S. warnings of an imminent threat.
• Putin vows to track down the masterminds behind the attack, emphasizing the need for tightened security and a new approach to migration.
• The attack has fueled anti-migrant sentiments in Russia, with a focus on Tajik migrants, and led to increased security measures.
• Geopolitical implications of the attack include strained U.S.-Russia relations and debates over the global counterterrorism strategy.