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KAI RYSSDAL: Everybody from the president on down’s praising the news out of Beijing today. North Korea has agreed to suspend its nuclear program in exchange for a $250 million aid package.

One sticking point both sides have agreed to leave for later is whether Pyongyang gets its hands on millions of dollars sitting in a bank in Macau.

University of Georgia History Professor Stephen Mihm says a lot has to happen before the U.S. unfreezes that money.

STEPHEN MIHM: If in the next month this question of the frozen accounts is resolved to their satisfaction — and that’s a big if — then that may do a lot to insure the success of this particular accord. But it’s by no means certain.