North Korea is refusing to back down from its demand at international arms talks that U.S. financial restrictions be lifted before it dismantles its nuclear program, delegates said Wednesday. North Korea agreed to end a 13-month boycott of the talks — which also include China, Japan, Russia, South Korea and the U.S. — to discuss a Washington campaign seeking to isolate the communist nation from the international banking system. The U.S. alleges the North is involved in a range of illegal activity, including counterfeiting $100 bills and money laundering. Full Story