Defence Minister Rajnath Singh on Saturday slammed Congress leader Rahul Gandhi for claiming to have an "atom bomb of evidence of vote theft" against the Election Commission, and dared him to detonate the explosive. Addressing a function organised by a media house in the state capital, Singh also likened the upcoming assembly polls to a crossroad, "with one path (under NDA) leading to further progress and another (under the INDIA bloc) taking Bihar back to its old era of lawlessness and caste strife." "Rahul Gandhi says he has an atom bomb. If it is so, he should detonate it at once. He should just ensure that he is himself out of harm's way," said the former BJP president, tongue in cheek.