Nick Vivarelli International CorrespondentLess than two months after Beirut was blasted by one of the biggest non-nuclear explosions ever recorded, director Nadine Labaki has taken to the streets of the Lebanese capital with her camera. “I don’t know where it’s going to lead, or if it will ever lead anywhere,” says Labaki, whose latest film, the Oscar-nominated “Capernaum,” shed light on Beirut’s preexisting desperation.