What is the fine-grained topic of the following text: According to Mary Ellen O’Connell, a respected legal scholar and professor of law and international dispute resolution at the University of Notre Dame, “The International Committee of the Red Cross statement means that the Assad regime is facing an organized armed opposition engaging in military force, and it has the legal right to respond in kind. Only return the topic.
International Committee of the Red Cross statement on Assad regime's right to respond to armed opposition