UNITED NATIONS (AP) — North Korea has continued to develop its nuclear and ballistic missile programs including its capability to produce nuclear fissile materials in violation of U.N. Security Council resolutions, U.N. experts said in a new report. The panel of experts said in the executive summary of the report obtained Saturday night by The Associated Press that there was “a marked acceleration” of Pyongyang’s testing and demonstration of new short-range and possibly medium-range missiles thr