India and Russia have been in talks for over a year for the purchase of at least five systems of S-400 that will be a game changer in the region.
External affairs ministry spokesperson Vikas Swarup also asserted that India's participation in the NSG would have further strengthened nuclear non-proliferation regime and made global nuclear commerce more secure.
The UK voted to leave the European Union after 43 years.
The meeting, which lasted for nearly 50-minutes, comes in the backdrop of stiff Chinese opposition to India's entry into the NSG, which looks after critical issues relating to nuclear sector, including trade and export of nuclear technology.
The nexus between middlemen, arms agents and government officials has been broken, according to Defence Minister Manohar Parrikar.
India on Monday did some plain-speaking with China over its blocking of the Indian bid to get JeM chief Masood Azhar banned by the UN and warned the global community of "serious consequences" if it continues to adopt "double standards" in dealing with terrorism.
External Affairs Minister Sushma Swaraj on met mother of a 23-year-old Russian woman who was attacked with acid in Varanasi in November last year and assured her of severe punishment to the guilty.
Swaraj took up the issue with Wang at a bilateral meeting in Moscow on the sidelines of the Russia-India-China trilateral meeting of their foreign ministers.
India has been eyeing deeper energy ties with Iran and has already lined up $20 billion as investment in oil and gas as well as in petrochemical and fertiliser sectors there.
India's ties with Saudi Arabia have been on an upswing over the last two decades based on burgeoning energy ties. Both sides are keen on expanding the economic ties in a range of areas besides the oil sector.
Immediately after his arrival in Riyadh, Prime Minister Narendra Modi on Saturday visited the Masmak fortress.
Reaching out to expatriates, Prime Minister Narendra Modi on Saturday announced a 24X7 multi-lingual helpline for them
Modi, who arrived in Moscow on Wednesday on a two-day visit, held talks with Putin during a restricted meeting in Kremlin to begin the 16th India-Russia Summit.
Russian President Vladmir Putin on Thursday gifted Prime Minister Narendra Modi a hand written page from Mahatma Gandhi's diary.
During his two day visit, Modi is expected to seal a raft of major deals in defence, nuclear energy and hydrocarbons sectors to further cement their 'special and privileged strategic ties'.
External Affairs Minister Sushma Swaraj on Wednesday called on Afghan President Ashraf Ghani in Islamabad and discussed connectivity, terror threats to the war-torn country and the peace and reconciliation process there.
Apart from key bilateral issues, the two leaders also discussed situation in the region, particularly in wake of the increasing threat of terrorism and extremism from various sources including the Islamic State militant group.
India's major import items from UAE include petroleum and petroleum products, precious metals, stones, gems, jewellery, minerals and chemicals
During his visit, first by an Indian prime minister in 34 years, Modi will seek to enhance cooperation in energy and trade and reach out to investors to hardsell India as an attractive business destination.
India asserted that it will strongly stand behind the Nepalese government which is seeking to "wipe the tears" of every Nepali.