© Reuters. Demonstrator waves a Guatemalan national flag while gathering with others during a protest against Guatemala's President Otto Perez in Guatemala City, Guatemala By Sofia Menchu GUATEMALA CITY (Reuters) - The last remaining ministers of Guatemalan President Otto Perez's original cabinet said on Saturday they could no longer work in his government after prosecutors sought to impeach him for corruption, piling pressure on the head of state to resign. Economy Minister Sergio de la Torre and Education Minister Cynthia del Aguila said they were standing down a day after the attorney general asked the Supreme Court for... More