Studying an opponent's moves is a key ingredient in any battle, a skill that Congress president Rahul Gandhi demonstrated today in full public view while accompanying his sister, Priyanka Gandhi Vadra, during her grand, carnival-like launch of her campaign in the narrow streets of Lucknow in BJP-ruled Uttar Pradesh. Rahul Gandhi, who has been needling Prime Minister Narendra Modi by calling him "chowkidar chor hai" on a range of flashpoints between the opposition and the centre, from the Rafale deal controversy to concerns over autonomy of democratic institutions, today gave a freestyle speech in which he was seen mimicking the hand gestures and body movements of PM Modi.