It is important, first, to see that there are always domestic constraints on what foreign policy is chosen. India has trumpeted its doctrine of "non-intervention" in other countries for so long that it is often forgotten that it was not arrived at for any reason other than domestic - to ensure that New Delhi's policy in Kashmir and the Northeast was never subject to the world's scrutiny. This concern has often forced India to operate with one hand tied behind its back on the world stage for decades - in spite of the fact that realpolitik suggests that a certain amount of equivocation in such matters is almost expected for powerful states. Most other democracies do manage noisy internal constituencies that have strong views on aspects of foreign policy, and an increasingly politically federal India will be no different. The effects of the Trinamool Congress on relations with Bangladesh and of the Left in UPA-I on relations with the United States suggest that India is long past the time when foreign policy was an issue that interested only the national capital and not state capitals.
The problem begins at the fact that there is no structured way in which such issues can be thrashed out other than the straightforwardly political. If a party wishes to help shape foreign policy, then there is no other recourse on hand but to become part of the governing coalition at the Centre and then threaten to walk out. It is essential, as India grows in power and the footprint of its foreign policy grows with it, that some structured way is found to incorporate political considerations such as the DMK's into a longer-term strategic stance, without compromising the interests of the country as a whole.
