Intelligence gathered by Egypt and Israel attest to the former Ansar Bait al-Maqdis - now reborn as the Islamic State’s operational arm in Sinai – being well into advanced preparations for a large-scale terrorist offensive targeting Israel forces manning the Egyptian frontier, along with a string of Egyptian targets across Sinai up to and including the Suez Canal and Cairo. According to DEBKAfile’s counter-terrorism sources, the Islamist group was so elated by the outcome of its multiple attacks on Jan. 29, which left at least 40 Egyptian soldiers dead and more than 100 injured in Sinai and Suez towns, that...