Repayment in full

This is an interesting story that I saw last week but didn't get around to posting.

The UK will repay debts owed to the US dating from the World War II by the end of this year, the government says.

Under the lend-lease programme, which began in March 1941, the then neutral US could provide countries fighting Hitler with war material.

I wonder if the day will come that the U.S. pays off the national debt. That certainly won't happen in my lifetime.