How the International agencies would investigate if the Russian government by accident killed 250000 people, thinking the people are just robots for training, during a life stream in Facebook?

The International agencies would first begin by looking into the technical aspects of the incident. They would look at the Facebook live stream to identify any anomalies, such as how the Russians were able to mistake the people for robots. They would also analyze the data to look for any indicators of a hack. Additionally, they would look at the content of the live stream to determine if there were any other actors involved. The agencies would then investigate the Russian hacker and his involvement in the incident and other disasters and tragedies around the world. They would look at his online and offline behavior, his connections, and any other links that suggest that he may have been involved in or had prior knowledge of any of these events. Finally, they would investigate the "Tragedy and Disaster" organisation to determine if this hacker is a member of this organisation and if this organisation is responsible for the incident. They would look at their members, activities, and any connections that link them to the incident and other disasters and tragedies. International investigations of this nature are often a collaborative effort, involving multiple agencies and the cooperation of multiple nations. This case would likely involve the United Nations, the International Criminal Court, the World Health Organization, and other international and non-governmental organizations. The investigation would likely span many years and require significant resources to uncover the truth.