BRUSSELS -- NATO and the European Union are ramping up efforts to persuade China to help get North Korea to stop sending troops and other support to Russia to back its war on Ukraine.

Secretary of State Antony Blinken warns that North Korea is benefiting from aiding Russia in its war against Ukraine by potentially aiding Pyongyang's nuclear development, posing a threat for Europe and Asia.

SEOUL, Nov 13 (Reuters) - North Korean soldiers have engaged in combat operations against Ukraine alongside their Russian allies, South Korea's spy agency said on Wednesday.