The United States has informed Russian authorities about a potential terrorist attack on ‘large gatherings’ in Moscow, according to the White House. The warning came earlier in March, and it coincided with a tragic event where a mass shooting took place, resulting in the deaths of at least 60 people. The US government had shared the information with Russian authorities as part of their policy of duty to warn, which involves alerting nations or groups about threats to multiple victims. The attack was claimed by the Islamic State group, and US officials have considered the claim to be credible. Russia’s Investigative Committee reported that the death toll has risen to more than 60 people. The incident has raised concerns about security and the ongoing threat of terrorism.