What is the author's style in Gulag: A History by Anne Applebaum?

The author includes many Russian terms and acronyms, but gives definitions for them and includes a glossary with the terms included as well. This makes the reading easier to follow. Individuals unfamiliar with Soviet history may have some difficulties with the inclusion of numerous Soviet individuals. Although she includes a brief introduction to each, the names of prisoners, authorities, leaders, prisons, and so