The official trailer of John Abraham and Diana Penty starrer 'Parmanu: The Story of Pokhran' was released today on the 20th anniversary of the Pokhran Nuclear test. The film is based on the second series of nuclear bomb test explosions conducted in Pokhran, Rajasthan in 1998. Directed by Abhishek Sharma, 'Parmanu: The Story of Pokhran' will release on May 25.