We need a new institutional arrangement for India. The objective is to bring India, Pakistan, and Israel into the NPT as non-nuclear-weapon states. That's not going to happen immediately, but we should not go the other direction and simply recognize them as nuclear states without placing them under any disarmament obligation.
How do we place them under disarmament obligation? If we can't eliminate their nuclear weapons, we need to take measures that, at a minimum, freeze them where they are. That means insisting that they ratify the comprehensive test ban treaty and that they put a verifiable freeze on their production of fissile materials for weapons purposes.
India claims to have a minimal deterrence strategy. It has easily adequate weapons and fissile materials to carry out that minimum deterrence strategy. It should be open to a freeze on that, and that's what the condition should be when we enter into a civilian cooperation arrangement with them.