Because Russia was on the back of India and US could get someone ‘friendly’ against Russia. Because Russia had deep connection with Serbs. There were many other political reasons Europe had differing US. Lame excuse for Palestine. Why not make details of the refusal by Arafat public? What is stopping you today?
If India take sweeping stance and become ally to Russia and sever its ties with US, we will see US moral policing on Kashmir issue immediately. Taiwan and Sinkiang are examples to see if you want to get off bias.
Again no one is asking you send aid to Pakistan.