In December 2009, Egypt began construction of an underground steel wall on its border with Gaza in a move designed to halt the smuggling of illegal weapons and other contraband via the Hamas-run underground tunnel network. Egypt’s initiative, which is being carried out in the name of its own strategic-national interests, has been the subject of intense criticism throughout the region. This article examines the emergence of a new alignment in the Middle East, based upon a new fault line between moderates and radicals. This alignment is manifested in Egypt’s construction of its underground steel wall. By exploring the motivations, responses, and implications of building such a wall, it will become apparent that two camps have emerged in the region on this issue and that their stances are but an illustration of the aforementioned shift.