In 1933, he traveled to Japan but was deported due to perceived communist ties.
Buchman went to China and spent six years in Shanghai, where he encountered Trotskyist Wang Fanxi, a leader of the Chinese Left Opposition.
From autumn 1939 to April 1940, Buchman lived in Coyoacán and worked as one of Trotsky's guards.
[2] As an amateur photographer, Buchman documented Trotsky's last year of life.
[3] Buchman died in Los Angeles on January 7, 2003.