Hamas has three to five times as many fighters — perhaps 40,000 in all — as the Islamic State had in Mosul. Additional surprises — rocket factories under schools; weapons stored in mosques — are likely to be found if Israel invades. Hamas’ military wing, the Al Qassam Brigades, is estimated to number 30,000 to 40,000, not including thousands of militants with other groups like Palestinian Islamic Jihad. Hamas fighters grew up in Gaza. The post The ‘Devil’s Playground’ of Urban Combat That Israel Is Preparing to Enter appeared first on New York Times.