China is using all it's diplomatic resources to try and prevent the US from obtaining eight diesel-electric subs for Taiwan. America wants to get the latest type 214 boats from German firm HDW. But China is threatening economic retaliation if Germany allows HDW to build the boats. Spain and Israel are more willing to build the boats, but do not have the state of the art technology HDW possesses. China is also trying to use North Korea as a tool to get America to reduce the number of modern weapons being provided to Taiwan.