Senior Congress leader Mani Shankar Aiyar on Wednesday took on Wipro chairman Azim Premji saying the latter's attack on Prime Minister Manmohan Singh was motivated.Aiyar alleged that Premji only represented a sectional interest and not national interest. He challenged Premji to contest election and win instead of targeting the Prime Minister. The MP's scathing attack came following Premji's comment that the country has been working without a leader."They are representing a class interest. Government of India represents a national interest. If Azim Premji wishes to make a difference, I suggest he stands from Mysore in the next election," the Congress leader said.Earlier, warning bells were sounded by industry leaders following the S&P report saying India would be the first fallen angel among BRIC countries. Many of them, including Premji, made direct attack on the political leadership.Premji attacked the UPA government and its leaders, particularly the prime minister, saying the country was functioning without a leader.The Wipro chairman, who had in the past attacked the government over its inability to take tough decisions, said that if the attitude of those running the country does not change India would be down for years.