Sisters Bela Henriquez, left, and Nadiezhda Henriquez with their mother, Zulma Chacin de Henriquez, center, testified about how Giraldo Serna's drug operations destroyed their family.
Canadian Prime Minister Justin Trudeau (left) and China's Premier Li Keqiang wrap up a joint press conference in Beijing on Aug. 31. Canada and China have agreed to discuss the possibility of an extradition treaty.
Russian supporters of NSA leaker Edward Snowden rally in central Moscow on July 12. Russia says it won't extradite Snowden to the United States, but it has cooperated with other countries in the past.
Evgeny Feldman/AFP/Getty Images