The comparison between the two different foreign policies is night and day. The foreign from the start of the cold war was hostile. This hostility showed itself in the form of the Super Race. The super race was basically an unspoken competition between the US and USSR superpowers to show without conflict who was superior. They determined this by military and industrial build up.
The policies of Nixon explained above were clearly diplomatic and were, I believe, the first real step toward the end of the cold war.