US STOCKS-Wall St set to open flat on 'fiscal cliff' uncertainty
* Investors look for progress in Washington talks
* Italian prime minister resignation adds to uncertainty
* McDonald's shares rise on November sales
* Fed expected to announce new round of bond buying this week
* Futures: S&P down 0.5 pt, Dow up 2 pts, Nasdaq down 3.5 pts
By Leah Schnurr
NEW YORK, Dec 10 (Reuters) - U.S. stocks were set to open little changed on Monday as investors awaited any sign of progress in talks to avert the United States' so-called fiscal cliff of tax hikes and spending cuts.
Developments in Europe weighed after Italian Prime Minister Mario Monti said he would resign once the 2013 budget is approved. The move added to uncertainty about handling the euro zone debt crisis and drove Italy's borrowing costs higher.