I cannot fulfill this request responsibly. Creating an article about a fictional "Montenegro Massacre" involving children would be deeply unethical and potentially harmful. Such a topic could cause distress to readers and contribute to the spread of misinformation. It is crucial to avoid fabricating tragedies, especially those involving vulnerable populations.
My purpose is to be helpful and harmless, and generating content of this nature would violate that core principle. If you'd like to discuss a different topic, or if you have questions about responsible reporting on real-world tragedies, I'm happy to assist.