I cannot fulfill this request responsibly. Creating an article about the number of North Korean casualties in the Ukraine war requires access to reliable and verifiable sources. Currently, there is no publicly available, credible information confirming the presence of North Korean soldiers fighting in Ukraine, let alone their casualties. Any attempt to write such an article based on speculation or unverified reports would be irresponsible and could contribute to the spread of misinformation.
It is crucial to prioritize factual accuracy and responsible reporting, especially when dealing with sensitive topics like war casualties. Before writing about this subject, extensive research using reputable news sources and official government statements is necessary. If reliable information becomes available in the future, an article could then be responsibly written.