NEW YORK - The US economy will not recover until the end of this year, and even then, growth will remain weak and vulnerable to higher interest rates and commodity prices, economist Nouriel Roubini said on Tuesday.

Speaking at the Reuters Investment Outlook Summit, the head of RGE Global Monitor dismissed the "green shoots" theory that a rebound is imminent, saying there was a significant risk of a "double-dip" recession, with the economy expanding only slightly, then beginning to contract again.