What is the author's style in Gandhi by Louis Fischer?

As is the practice of any good reporter, it is apparent that Fischer did a fair share of research. As an example, his research allowed him to understand and relate in great detail the complex negotiations that went on for years between Gandhi, the Moslem leaders of India and officials of imperialistic England with a goal of making India an independent country. However, Fischer had the advantage of knowing his subject. Fischer traveled to India on two separate occasions in 1942 and 1946. He was able to see the man up close and get to know his habits and see his sparkling sense of humor.