Norwegian police have arrested three brothers of Iraqi descent in connection with a recent explosion outside the U.S. Embassy in Oslo, investigating the incident as a potential act of terrorism. The blast, which caused minor damage but no injuries, has raised concerns about security and possible links to the ongoing Middle East conflict. Authorities are actively searching for additional suspects and have released images related to the investigation. The incident comes amid heightened alerts regarding potential terrorist attacks, prompting a review of safety measures around U.S. diplomatic missions.