Deterrence and coercion are two kinds of strategies,the latter being more aggressive than the former.The U.S.Asia-Pacific Rebalancing strategy is an important diplomatic legacy of Obama's administration.For the issues involving the Diaoyu Islands,the South China Sea,cyber security,DPRK's nuclear program,and Iran's nuclear program,the U.S.has carded out military deterrence and non-force coercion against China.But generally,these are low-level coercive measures and distinct from the severe economic sanction and diplomatic isolation imposed by the U.S.on Russia,Syria,DPRK and Iran in recent years.Concerning issues where the U.S.and China hold distinct views,there would be less strategic leeway for the two countries.If the U.S.is to strengthen deterrence and coercion towards China,China can respond more actively and effectively,but it will be more difficult to build a new model of China-U.S.major-country relationship.