Having grown up in communist state of india i can say , indian communists are not what they were 20 years back. They have moved towards capitalism, partly to fill their coffers. They dont have links with masses anymore. Their own student and workers wings stage demonstrations against the state government. As said by KK once the top man dies, there will be nothing like communism in india, except ofcourse the name.

Coming back to topic, india has its own interest to look after in sikkim and aurnanchal pradesh. The day we fully support Tibet as sovereign, china will push hard on their claim on these states of india. Call it a dirty trade, call it selfishness, but thats how it is.