Referring to Nepal, they termed India's relationship with the neighbouring country as “substantive”.
Noting the democratic transition in the country, the sources said India's relations was not one that “turns on and off”.
New Delhi has got assurance from the leadership of successive Nepalese government that its territory will not be allowed to be used for anti-India activities.
This follows India voicing serious concerns over reports of Pakistan's ISI using Nepal's territory to target India.
Singh is expected to have discussions over the entire gamut of bilateral ties when he meets his new Nepalese counterpart Sushil Koirala here.
The Prime Minister will have separate meetings with Sri Lankan President Mahinda Rajapaksa, Bhutan Prime Minister Lyonchhen Tshering Tobgay and Myanmar President U Thein Sein.
He will also have a meeting tomorrow with Myanmar pro-democracy leader Aung San Suu Kyi, who is chairperson and secretary general of the opposition party National League for Democracy.
