Nuclear weapons aren't the only thing we should be worried about. The U.S. Treasury Department warned financial institutions today that the North’s government may resort to using “high-quality” counterfeit money in an attempt to get around the strict measures that keep Pyongyang from obtaining enough funds to develop its nuclear arsenal. After conducting a nuclear test in May and another earlier this month, the United Nations Security Council tightened its restrictions on weapons imports in North Korea and banned transactions related to the sale of North Korean arms. According to Michael O’Hanlon, a senior fellow at the Brookings Institute, the country will “definitely try” to shirk these restrictions. “It's consistent with their past behavior and they certainly don't consider it beneath their dignity,” he said. “They'll find some new way to cheat.” The Treasury Department said large cash transfers made by North Korean customers should be regarded as highly suspicious.