I think china may have already occupied the indian territory , and Indian govt may have left with no option , just to accept .
Remember 1962 , too much coochi coo , then slient invasion , same coochi coo has happened this year also . if china launches 2 lakh troops in 1 day in arunachal pradesh , thats enough to capture it , india cannot do anythng to recapture as china will directly threaten to use nukes