India and Bhutan have discussed ways to improve security along the international border and the possibility of opening a road, linking Arunachal Pradesh’s Tawang with Assam via the Himalayan country. Better security coordination along the Indo-Bhutan border, more trade between Bhutan and Indian states like Assam, Arunachal Pradesh and West Bengal, cultural exchange and a host of other issues were discussed by Minister of State for Home Kiren Rijiju with the top Bhutanese leadership, including Prime Minister Tshering Tobgay, during his two-day visit here that ended Sunday.