Back in the history, we know all about the armor thickness on every tank's frontal, side, rear, top, and bottom. All the specifications are made public knowledge. Today, when I look at modern day Main Battle Tanks, nowhere mentioned detailed armor specifications in the name of "classified". American M1A2, German Leopard 2, British Challenger 2, Russian T-90, French Leclercq, Israeli Merkava 4, Chinese ZTZ-99A2 Some armors claimed to be "equivalent to" 800~1000mm of steel armor. Obviously they are not made with pure steel, it must be some kind of super classified secret alloy. Does anyone know their actual armor specifications from all sides?