Claims banks of asia, europe, and middle east have their reserves depleted and can no longer cover for the U.S. not paying the interest on all the treasury notes that these banks have bought.
Force majeure (not force majeur, or force majure, or force mazure)
Frees both parties in a contract from the obligation of the contract if some event that was unseen and beyond the control of the parties interferes.
Tangerine Dream created a great album called "Force Majeure"