(WASHINGTON) — The U.S. official in charge of talks with North Korea says time is running short to achieve a deal, but not because of the end-of-year deadline set by Kim Jong Un. U.S. envoy Stephen Biegun tells the Senate Foreign Relations Committee that any crisis or other distraction could derail talks. Biegun says the “window is still open” but the North Koreans “need to seize the moment.” The envoy says Kim needs to grant more authority to his negotiating team. Biegun says the U.S.