Hundreds of members of the Lebanese armed group Hezbollah, including fighters and medics, were seriously wounded on Tuesday when the pagers they use to communicate exploded, a security source told Reuters. A Hezbollah official, speaking on condition of anonymity, said the detonation of the pagers was the “biggest security breach” the group had been subjected to in nearly a year of war with Israel. A Reuters journalist saw ambulances rushing through the southern suburbs of the capital Beirut amid widespread panic. Residents said explosions were taking place even 30 minutes after the initial bla…