Destruction and celebration ensue in an unknown part of Egypt.<br/> <br />New video posted on social media appears to show Egypt's most dangerous militant group, the Sinai-based Ansar Bayt al-Maqdis, carrying out attacks on government security forces.<br/> <br />Reuters is unable to independently verify the video.<br/> <br />The group this week pledged loyalty to Islamic State militants in Iraq and Syria while threatening more attacks against supporters of Egyptian President Abdel Fattah al-Sisi, who says an Islamist insurgency in the Sinai could destabilize Egypt and threaten its neighbors.
