"It was a very successful trip and the results were more than my expectations," Swaraj said at Tribhuvan International Airport here before leaving for New Delhi.
During her visit, Swaraj met Nepal's top leaders including President Ram Baran Yadav and Prime Minister Sushil Koirala. Swaraj also met UCPN-Maoist chief and Leader of Opposition Prachanda.
Swaraj was in Nepal to co-chair the meeting of the Indo-Nepal Joint Commission which was held yesterday after a gap of 23 years and to prepare the ground for the two-day official visit of Prime Minister Narendra Modi from August 3 -- the first visit by an Indian Premier in over 17 years. The late Prime Minister I K Gujral had visited Nepal in 1997.
The two countries also agreed to "review" and adjust" the Treaty of Peace and Friendship of 1950 to reflect the current realties.
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The decision was taken at the meeting of the Indo-Nepal Joint Commission co-chaired by Swaraj and her Nepalese counterpart Mahendra Bahadur Pandey.
The JC also directed Nepal-India Boundary Working Group to commence field works at the earliest.
The Nepalese leaders during their meetings with Swaraj expressed their "happiness" and "excitement" over the initiative taken by India to bring new momentum in ties and said they have high expectations from the forthcoming visit of Modi.
Swaraj, who arrived here on Friday, is on on her second stand-alone visit to a neighbouring country after Bangladesh within two months of assuming charge.