New Delhi, March 17: Criticising US President Dold Trump for his protectionist policies, Nobel Laureate Paul Krugman on Saturday accused him of not taking his job seriously and warned these measures lead to “risks of a disruptive trade war”. “He (Trump) does not take the job seriously. He doesn’t say to himself that I am the most important official in the world, I have better do my homework for understanding the issue... “He just goes that these are my gut feelings and hires people who make him feel good...that is a frightening prospect,” Krugman said at the News18 Rising India Summit here in response to a query on his perception of Trump. On economic issues Trump’s gut feelings are “protectionist” and his views of America were “50 years out of date”, said the prominent economist. “He wants America a heavy industrial country in the way it was when he was a young man. That is not just going to happen but he attempts to make it happen, which is extremely disruptive to America and to the global as a whole,” he added. Krugman said he was till recently optimistic that Trump’s protectionist policies would not see the light of the day.