What is the fine-grained topic of the following text: He also sent an ambassadot to the court of the emperor Khusrau and also received an ambassador from him.1 He was killed by Narasimhavarman I, son of Mahendravarnam I of the Pallavas in the Battle of Badami. Only return the topic.
Diplomatic relations and conflict between Khusrau and Narasimhavarman I