Bhutan signed a political Treaty with independent India in 1949, much before it stepped out of its self-imposed isolation in early sixties. According to Article 2 of the Indo-Bhutan Treaty, 1949, at least theoretically, Bhutan is required to consult India in the conduct of its external relations. Although, the basic framework of the bilateral relations may be the Treaty of Friendship and Cooperation of 1949. However, the Treaty which was signed in 1949, has never become an irritant factor in the traditional warm relationship between the two countries. There are frequent state visits between two countries. The Indian ministers and top army brass also keep visiting Bhutan, frequently. India is responsible for Bhutanese security. Indian Military Training Team (IMTRAT) is based in Bhutan to provide training to Bhutanese security forces.