India, Sept. 1 -- After Congress leader Rahul Gandhi doubled down on his allegations of "vote chori" and warned the BJP of another impending expose that he termed "a hydrogen bomb", the ruling party on Monday called him irresponsible and "hard to understand".

On the last day of his 16-day 'Voter Adhikar Yatra' in poll-bound Bihar, Rahul Gandhi referred to his claims of voter fraud in Mahadevapura segment, in the Bangalore Central Lok Sabha constituency, as "atom bomb".

"You know what's bigger than atom bomb - the hydrogen bomb," Gandhi said to a crowd in Hindi, "The BJP should be ready. A hydrogen bomb is coming." He did not specify what he meant, but earlier videos of similar claims showed roars of "Varanasi", Prime Minister Narendra M...