The UN's nuclear watchdog says North Korea continued its nuclear activities LAST YEAR and made some progress.<br />In a report it will submit to the UN General Assembly next month, the International Atomic Energy Agency said it found signs the North operated its 5 megawatt nuclear reactor in Yeongbyeon until mid-August last year.<br />There were intermittent operations until November, and none in December.<br />The agency also said the North used steam superheaters in its reprocessing plant from late April to early May.<br />Centrifuge enrichment facilities were powered up as well.<br />The IAEA said such activities are a clear violation of UN Security Council resolutions and are very regrettable.<br />
