The Israeli military issued the world's first announcement of a military campaign via Twitter today with the disclosure of a large-scale, ongoing operation in Gaza. The Twitter announcement was made before a press conference was held.A major Israeli military campaign in the Gaza Strip was announced today via Twitter in lieu of a formal press conference. The Israeli Defense Forces' official @IDFSpokesperson Twitter feed confirmed “a widespread campaign on terror sites & operatives in the #Gaza Strip,” called Operation Pillar of Defense, at approximately 9:30 a.m. Eastern time. Shortly before the tweet, Hamas' military head Ahmed al-Jabari was