Re: India buying Tu-22 bombers.
Both sides in the Kashmir dispute either have or are developing nuclear-capable IRBMs with enough reach to get deep into the other side's territory.

http://news.bbc.co.uk/1/hi/world/south_asia/2014843.stm

 to see what Pakistan could do to the region, and remember that india has a functional native satellite launch capability, which means effectively it has ICBMs in its arsenal.

 The Tu-22s give India a conventional large bomber capability which it currently lacks. It is still prone to interception by SAM systems or fighters and without a standoff capability it would not be a truly useable nuclear-delivery mechanism.