Israeli warplanes struck a pro-Iranian Hezbollah stronghold in eastern Lebanon on Sunday, inflicting at least three casualties, sources with Lebanese security officials and Hezbollah said. Lebanese security sources said a two-storey building was hit by Israelis warplanes in Nabi Sheet, near the city of Baalbeck. The Israeli army said that in response to the launches that were fired toward northern Israel overnight, Israeli fighter jets struck “a significant Hezbollah weapons manufacturing site in the area of Nabi Chit, deep inside Lebanon.” Lebanese security sources said Hezbollah fighters wen…