US borrowing costs hit highest level since 2007 as oil prices jump bbc.comTreasury Yields Above 5.25% Change Everything Advisor PerspectivesWhat Comes Next, Now that the 10-Year Treasury Yield Has Crossed 5%? WSJGlobal bond yields hit 2008 highs, raising stakes for big borrowers Yahoo Finance10-year Treasury yield hits 5%, critical threshold for US economy and markets CNN