'No magic fix' on North Korea, expert says

"You can't sanction North Korea into collapse or compliance," Cirincione said.

Trump unveiled new economic sanctions against North Korea Thursday that target the regime and companies that do business with them.

"In the end you can't sanction North Korea into collapse or compliance. You're going to need a negotiated solution," Cirincione said.

But without negotiations, Cirincione predicted that North Korea will not slow down its nuclear program, and could have as many as 100 nuclear-tipped missiles with the next five years.

“There is no way North Korea is going to give up its weapons right now. They look at Iraq, they look at Libya, and the lesson they draw is that if you give up your weapons America is going to kill you,” said Cirincione. “That’s not irrational. That’s realist.”