In The Policy of Darius and Xerxes towards Thrace and Macedonia Miroslav Vasilev analyses in detail the policy of the Persian kings towards their European possessions in the years 514–465 BC. The book examines the status of Macedonian rulers under the Persian kings, as well as the status of the Thracian territories conquered as a result of the campaigns of Darius and Megabazus. In addition, the author localizes many tribes, rivers, lakes, mountains, and other geographical features of primary importance in defining the territorial span of the European lands conquered by the Persians. Vasilev examines literary sources, epigraphic evidence, coins, and archaeological finds relevant to the topic.