National Security Adviser Ajit Doval has landed in the US to pave the way for high-level discussion between Prime Minister Narendra Modi and US president Barak Obama. The PM is leading an Indian delegation to participate in the Nuclear Security Summit this week which is being hosted by US President Barack Obama on 31 March and 1 April. As part of India's charm offensive in Washington, Doval called on his US counterpart Susan Rice at the White House during which the two officials discussed bilateral and regional issues in addition to reviewing the counter-terrorism cooperation between the two countries. The two National Security Advisers are understood to have reviewed the progress made on the decisions taken by Obama and Modi during their meetings last year in New York on the sidelines of the UN General Assembly, and in Paris on the sidelines of the summit on climate change. Doval is also scheduled to meet Secretary of State John Kerry at the Foggy Bottom headquarters of the State Department.