Federal prosecutors stepped up a campaign against North Korea on Friday, unsealing two cases involving alleged sanctions violations as officials warn Pyongyang remains a significant threat to national security and the global financial system.
Prosecutors in the U.S. attorney’s office in Washington, D.C., asked a federal judge to order the forfeiture of funds associated with a former North Korea employee and related front company of Chinese telecommunications giant ZTE Corp. Separately, they charged with sanctions violations…