If you want to sell arsenic, the kindest way to do so is to disguise it as medicine heavily coated with sugar. There is nothing particularly new about the proposal of an interim balm for the wounds of Kashmir, demilitarization on both sides of the Line of Control. What is novel is the heavy Washington endorsement of this Pakistan-promoted option.

This is not all. Unusually for a senior diplomat of a super power that affects neutrality, US under secretary of state for political affairs, William Burns, chose Delhi as the venue for a message designed to disturb the equanimity of his hosts, when he said, "Any resolution of Kashmir has to take into account the wishes of the Kashmiri people". That must have been music to Islamabad's ears.

Demilitarization sounds so sweetly reasonable, a definitive gesture of de-escalation. The Obama administration is delighted by the prospect of collateral benefit. This would release more Pak troops for the war against Taliban. Pakistan has shifted some brigades from the Indian border, but not from the Line of Control.

Self-interest may have blinded Washington to an obvious fallacy in this "reasonable" formulation. In all three major Kashmir conflicts - 1947, 1965 and Kargil - Pakistan has used a two-tier strategy. A surrogate force has served as a first line of offense. The Pakistani term for them has been consistent; they have come in the guise of "freedom fighters". India called them "raiders" in 1947 and 1965, and defines them as terrorists now. This surrogate force has expanded its operations far beyond Kashmir, as the terrorist attacks on Mumbai confirmed.

DMZs (De-Militarized Zones) would guarantee the security of Pakistan and weaken India's defences, since there is no suggestion that terrorist militias are going to be "demilitarized". Should the Indian army leave the Kashmir valley to the mercy of well-organized, finely-trained, generously-financed indiscriminate organisations? India has no corresponding surrogate force, because it is a status-quo power; it makes no claims on any neighbour's territory.