Two Americans were killed and a third was wounded in a raid in Afghanistan against Islamic State group militants. The Pentagon has confirmed that the military personnel died in combat in Nangahar province.<br/><br/>Earlier this month American Army Staff Sgt Mark De Alencar was killed in the same province. It comes only days after US Defense Secretary Jim Mattis visited the country. The American soldiers were conducting an operation against IS Khorasan, an affiliate of the core Middle Eastern group.<br/><br/>Pentagon said, the operation was conducted in partnership with the Afghan National Defense and Security Forces. The operation took place near the district of Achin, near to where the US recently dropped "the mother of all bombs", the largest non-nuclear weapon in the US arsenal.