Since the end of the cold war, the United States has never encountered such an opponent

ring news issued a document,
the United States Capitol Hill issued a document saying that the Sino Russian military and technical differences between the U.
S.
military is rapidly shrinking.
Russia and China have new weapons that can detect and shoot down American warplanes and warships more effectively.
The goal of Moscow and Beijing is to force American troops away from the border between the two countries.
The Russians,
for example,
are challenging the United States in the Baltic sea.
Recently,
it is the action that the United States warships and aircraft at night.
Some people think that after the cold war,
the United States has never encountered a large number of highly accurate weapons opponents.
The United States Deputy Defense Minister Robert Walker acknowledged that although the United States advanced anti missile system to global coverage,
but the number of enemy submarines are increasing,
quiet performance better,
more and more difficult to find.
Because of this,
The Pentagon has decided t