Siachin does hold strategic importance thats why Indian army invaded this no-man's land. Beaten by China and Pakistan in 60's India started fighting politically, it were Indian politicians that made Bangladesh.
Bangladesh was not a military triumph. It was the political triumph of India that made east Pakistani people go against west Pakistani people. If you dont have nation with you, you cannot win a war. Same thing is Pakistan doing in Kashmir; Kashmiris are not with India now. Start counting years when Pakistan will get other half of Kashmir too.