Subdued world markets were relieved at the ease with which Monday's sale of U.S. Treasuries was absorbed, but firmer oil prices ahead of the week's postponed OPEC+ meeting cut across any further decline in yields for now. Benchmark Treasury yields fell back more than 10 basis points to 4.37% after a total of $109 billion of 2 and 5-year notes hit the Street on Monday without much disruption. November consumer confidence data will also be released as investors assess the mood on the High Street and online from "Black Friday" and "Cyber Monday" retail activity.