Indian Kashmir (including Siachin) = 39,000 sq miles
Pak Kashmir = 33,000 sq miles
Chinese KAshmir = 14,000 sq miles
Pak already got a big part of Kashmir and Inida does not have half of KAshmir since 1948.
Pak economy is 1/8 of indian econony but then India has 10 times more poor than Pak to look after them.
Pak military is hardly 1/2 of Indian military and there are many areas where this is less than half as number of tanks, nukes etc.
India do talk strong when Pak speaks about Kashmir but what India does do to China. Look what China has done. Her president was in India and PLA made incursion in Indian territoy (Ladakh) at the same time. From last few years, China makes incuriosn in Indian territory, stays there for few days and then both Indian army and PLA decides no one will keep their troops there in that part of territory. In this way China force India not to have their troops in their own percieved territory. One more thing..the above mentioned indian Kashmir area also takes count of that territory which has become no mans land between China and India.
Pak is 1/8 of India but still Pak behaves much stronger with India as compared to India when it comes to China.