Doval, a former spy, has emerged as a James Bond-like cult figure because of his hawkish ideology, tactful operations and a background that's straight out of an espionage thriller.
Here's all about him.
Ajit Doval's role in resolving Doklam crisis
Who is Ajit Doval?
Ajit Doval, born in 1945 in Garhwal (Uttarakhand), is India's fifth National Security Adviser appointed on 30 May'14.
He graduated from the University of Agra with a Master's Degree in Economics in 1967 before joining the Indian Police Service in 1968.
He retired as the director of the intelligence bureau in 2005; he previously headed the IB's operations wing for more than a decade.
Doval stopped hijackings, lived in Pakistan, infiltrated Sikh separatist group
During 1971-1999, Doval was involved in the termination of all 15 hijackings of Indian Airlines planes.
He lived in Pakistan for seven years disguised as a Muslim.
In 1975, Doval played a significant role during the merger of Sikkim with India.
In 1988, he infiltrated a Sikh separatist group holed up in the Golden Temple, collecting information that led to Operation Black Thunder's success.
Love India news?
Stay updated with the latest happenings.
Influence of Doval doctrine visible in Modi's foreign policy
In two separate lectures given in 2014 and 2015, Doval outlined his thoughts on defense and foreign policy which form the basis of the Doval Doctrine.
Doval favors a hawkish stance on hostile countries and terrorists.
Opponents can be dealt with at a defensive, defensive-offensive or offensive level, with morality having no consideration.
He favors the defensive-offensive approach; visible in 2016's surgical strikes in Pakistan.
Doklam resolution a result of Doval's parleys with Chinese NSA
According to government sources, Doval played a major role in the Doklam standoff's resolution.
Doval met his Chinese counterpart, State Councillor Yang Jiechi, in Hamburg to start negotiations.
They made their first breakthrough during the July 27-28 BRICS NSA meeting in Beijing. The parleys between both men continued over the phone.
This culminated in the standoff's resolution on August 28.
Doval-Yang shared terse exchange during negotiations
Doval didn't back down when Yang claimed Doklam didn't belong to India.
He reportedly replied to Yang that it wasn't Chinese territory either, implying it belonged to Bhutan.
Doval shot back: "Does every disputed territory become China's by default?"
The sharp exchange was followed by further negotiations, in which Indian Foreign Secretary S Jaishankar and ambassador to China Vijay Gokhale also played a role.
India always wanted to use negotiations with China to lead to an eventual mutual troop withdrawal at Doklam. China had disagreed, telling India to withdraw troops first, then sit on the negotiation table. In the end, thanks to Doval, India got its way.
Pakistan finally admits LeT, JeM are based in its territory
15 US states sue Trump over DACA decision in court