Prime Minister Narendra Modi, who launched BJP's campaign in poll-bound Karnataka on Tuesday, unleashed a sharp attack on Congress president Rahul Gandhi, daring him 'to speak in any language' for 15 minutes about the achievements of the Siddaramaiah government. "Congress President has challenged me, if he speaks for 15 minutes in Parliament, I will not be able to sit. I challenge you (Rahul Gandhi) to speak for 15 minutes on the achievements of your government in Karnataka without reading from any piece of paper," Modi said while addressing a rally at Santhemarahalli in Karnataka. Watch News Nation's special coverage to know more details regarding the same.