James Saft (James Saft is a Reuters columnist. The opinions expressed are his own.)

Repeat after me: “I believe in a strong dollar as the primary global reserve currency, I believe in a strong dollar as the primary global reserve currency.”

Better hope it works, because the current debate over a far-in-the-future new monetary system may bring on a here-and-now dollar selloff and a whole new leg of the crisis.

Sadly, what worked when the children espoused their faith in Tinkerbell may not for a currency backed by the full faith and credit of a debtor nation which has socialised its banking system’s risk and needs to sell trillions in further debt to pay that and other bills.

Russia, India and, most significantly, China have all questioned the U.S. dollar’s central role in global trade and currency reserve management in the run-up to this week’s meeting of the Group of Eight industrialized nations in Italy. The future, it seems, is not greenback.

Russian President Dmitry Medvedev termed the system based on the dollar “flawed.” Suresh Tendulkar, a top Indian economic advisor said he was telling India to reduce the dollar’s weighting in setting the value of the rupee, comparing the situation to the classic “prisoner’s dilemma.”