Lethal injection
First developed in the United States, it has become a legal means of execution in China, Thailand, Guatemala, Taiwan, the Maldives, Nigeria, and Vietnam, though Guatemala has not conducted an execution since 2000 and the Maldives has never carried out an execution since its independence. Although Taiwan permits lethal injection as an execution method, no executions have been carried out in this manner; the same is true for Nigeria. Lethal injection was also used in the Philippines until the country re-abolished the death penalty in 2006.