Why would the US Department of Justice drop five cases against Chinese researchers including Dr Juan Tang, a cancer researcher who allegedly lied on her visa application after photos of her were found wearing a Chinese military uniform? The five cases are just part of a bigger picture which can best be termed as “The Great Retreat.” In many areas, the US is lowering its profile and backing away from its commitments. For example, the US has pulled its only aircraft carrier, the USS Ronald Reagan, from the Pacific ostensibly to cover the retreat from Afghanistan. But whether the Ronald...