On 20 June 2008, at a press conference in Dera Baba Nanak arranged by Akali leader Kuldeep Singh Wadala, John W. McDonald, a former American ambassador and founder of Institute for Multi-Track Diplomacy, called for "a peace corridor, a peace zone" connecting shrines on both sides of the border.[37][38] On 28 June 2008, the Indian foreign minister at the time, Pranab Mukherjee, said that the Indian government would carry out a feasibility study for the peace corridor.[39][40] However, since the 2008 Mumbai attacks took place, the relations between India and Pakistan nosedived and the initiative faltered. Members of the Sikh community in Washington DC worked with the Institute for Multi-Track Diplomacy to carry out an independent feasibility study.[37] In August 2010, their report titled "Kartarpur Marg" was released by Surinder Singh and the Institute.[41][42] According to the report, the cost of the corridor would be 17 million US dollars, which the Sikh diaspora agreed to raise.[43][44] The report had said that it would cost Pakistan $14.8 million and India $2.2 million.[45] In November 2010 the Punjab state legislative assembly unanimously passed a resolution in favour of an international passage between the two sites and forwarded it to the Indian Union government on 1 October 2010.[46]