London CNN —World leaders are flocking to Davos this week to pontificate on the planet’s most pressing problems. Even in the absence of a new crisis, soaring debt servicing costs will constrain efforts to tackle climate change and care for aging populations. Mortgage rates and other borrowing costs soared as investors demanded much higher premiums for owning UK debt. Mounting debt and political brinksmanship have already taken their toll on America’s credit rating, which typically affects borrowing costs for the government, businesses and households. And that would increase the government’s borrowing costs.

---

Persons: worryingly, Michael Saunders, ”, Saunders, that’s, Liz Truss, Dave Ramsden, Fitch, Moody’s, Raghuram Rajan, “ It’s, ” Rajan, Anna Cooban Organizations: London CNN —, Bank, CNN, Oxford Economics, Bank of England, AAA, States ’, Reserve Bank of India, Labour Party, Treasury Department, Federal, University of Chicago Booth School of Business Locations: Davos, Kingdom, Argentina, States, United States, Switzerland