China is reported to have secretly conducted an anti-satellite (ASAT) missile test last year.
China: On May 13, 2013, China launched a rocket into space from the Xichang Satellite Launch Center in southwest China. According to state-run media reports at the time, “The experiment was designed to investigate energetic particles and magnetic fields in the ionized stratum and near-Earth space. According to a preliminary analysis by the NSSC [National Space Science Center], the experiment has reached expected objectives by allowing scientists to obtain first-hand data regarding the space environment at different altitudes.”
Nearly immediately, US officials speaking off the record began raising doubts about the supposed purpose of the test. Specifically, a US defence official familiar with the intelligence told the Washington Free Beacon that China had actually tested its new ASAT missile, the Dong Ning-2. The official described the DN-2 as a ground-based, high earth-orbit attack missile. However, the Pentagon refused to officially voice these concerns.
Source: The Diplomat