Nobel Prize-winning economist-turned-political commentator Paul Krugman offered a grim assessment of America's economic prospects if President Donald Trump's war with Iran continues.Krugman, who wrote a similar warning on his Substack, told MS NOW's Chris Hayes on Tuesday that the longer the war goes on, the greater the likelihood of a global energy crisis that will make the 1970s look like playtime."Professor, what is your read, I guess, topline on the kind of macroeconomic global economic reve...