Renato Pajuelo/AP
Pedro Castillo was detained last week after he attempted to dissolve Peru's Congress. Castillo was quickly replaced by Dina Boluarte, Peru's first female president. In a letter shared on Twitter, Castillo said he was still president and called Boluarte a "usurper."Former President Pedro Castillo, who was ousted on December 7 after a failed attempt to seize power,...