treasury yields declined on monday as renewed geopolitical tensions helped boost demand for bondmarket safety plays bond yields move inversely to prices rising as prices fall and viceversa the yield on the 2year treasury note sbxtmubmusd02y declined by 12 basis points to 4642 the yield on the 10year treasury note sbxtmubmusd10y retreated by 43 basis points to 3580 the yield on the 30year treasury note sbxtmubmusd30y declined by 46 basis points to 3575 analysts attributed the strength in bonds to the latest tiff between beijing and washington after a us navy destroyer sailed through waters near the spratly islands in the south china sea a key nexus for global trade which is claimed by beijing the overnight price action was credited to an increase in geopolitical saberrattling following reports that the us navy sent a destroyer through waters near the spratly islands claimed by beijing said ian lyngen head of us rates strategy at bmo capital markets