The italian 76mm gun has the advantage of using DART guided-rounds for high-end anti-missile purpose (the Strales version). BAE 57mm has roughly similar use with the ORKA rounds. Those can be considered as true CIWS.
Neither the chineses nor the russians have similar capabilities. Their main guns can easely do overall anti-air warfare against planes and helicopters, but their use against missiles should be extremely limited.
Neither the chineses nor the russians have similar capabilities. Their main guns can easely do overall anti-air warfare against planes and helicopters, but their use against missiles should be extremely limited.