The families of nine people killed in a 2012 massacre at a Newtown, Connecticut, elementary school sued the maker of the gun used in the attack on Monday, saying the weapon should not have been sold because it had no reasonable civilian purpose.
President Barack Obama used a holiday season visit to a U.S. military base on Monday to issue a tough warning to Islamic State militants, saying a U.S.-led coalition will permit no safe haven to the group and will destroy it eventually.
Heavily armed Australian police stormed a Sydney cafe early on Tuesday morning and freed a number of hostages being held there at gunpoint, in a dramatic end to a 16-hour siege in which three people including the attacker were killed.