Salam Mahotarma,:) Marhawa, Kai fa haluka,
USSR has never been our master. We traded with them and it was very beneficial for our nation. Well, invasion of Afghanistan was unfortunate and we didn't speak anything because they were our alleys. Our relationship with them at that time was more important to us then shedding tears for Afghani (brothers). It was pragmatic decision just like when Chinese killed hundred of Muslims in their provinces you didn't speak a word. I will not go after the reason and history behind soviet invasion. Ask any Afghan today , they like Russians more that Pakistanis.
Today we have good relation with both USA and Russia, because we are pragmatic nations. We consider them partners, we are not blinded by our ideology. We sometimes use them to put Pakistan in her rightful Place which is on the floor(unfortunately). When your army starts to shoot down US drones, then talk to us about "Usool".
In the mean time do some yoga, meditation and start drinking green tea, very helpful against depression :)