By Shashwat Chauhan and Kanchana Chakravarty (Reuters) -Wall Street futures fell and Treasury yields rose on Monday after Moody's downgraded the U.S. sovereign rating, sharpening focus on the country's mounting debt.

HONG KONG (AP) — Global shares fell Monday and U.S. futures and the dollar also weakened after Moody’s Ratings downgraded the sovereign credit rating for the United States because of its failure to stem a rising tide of debt.