Published Date: 2024-03-26 00:30:00, Category: News (691460)Time: 01:31 min, View Count= 33 ( + More Social Media views ) , Rating= Title: Mourning in Moscow for terrorist attack that killed 137Keywords: Mourning Moscow terrorist attack killed 137 Description: President Vladimir Putin blamed radical Islamists for the attack on a concert ISIS has claimed NBC News Matt Bradley Subscribe to NBC News: