When rehearsals for a new play began in Tripoli, the actors all carried knives and one smuggled in a grenade. But this cultural collaboration has brought traditional enemies together and formed powerful friendships across a divided city... This feature article written for The Guardian, as part of the newspaper's Rockerfeller Association supported "Resilient Cities" project looks at how Lebanese actors and NGOs have developed innovative projects aimed at alleviating sectarian tension, and bringing together rival fighters, in the northern Lebanese city of Tripoli. It was published in December 2015.