The U.S. warned Russia about an imminent terror attack at a concert hall in Moscow, which killed over 130 people. The warning was shared under the 'duty to warn' principle, but Russia did not act to prevent the attack. The Islamic State claimed responsibility for the attack.
Key Points
U.S. shared warning with Russia under the duty to warn principle
Russia did not act to prevent the attack
Islamic State claimed responsibility for the attack
History of warnings not being heeded
Pros
Advance warning given to prevent loss of life
Sharing of intelligence can help in international security efforts
Cons
Russia did not take action to prevent the attack despite the warning
History of warnings not being heeded or acted upon