In a festive ceremony yesterday, Israel revealed its newest and most advanced tank: the Siman-4. IDF Ground Forces Commander Gen. Yiftah Ron-Tal, said that the Siman-4 is the most advanced in the world and is an important addition to the IDF\'s ground array. He noted specifically the new tank\'s mobility in both open and urban areas, its firepower, and its circumferential protection. The Siman-4, designed by Gen. (res.) Yisrael Tal, will begin active combat duty in two years.