A wave of attacks by armed groups across Colombia this year has left Colombians fearing a return to the country’s more violent past.

An attack on a Colombian police helicopter killed at least eight police officers on Thursday, according to President Gustavo Petro, who attributed it to dissidents of the defunct Revolutionary Armed ...

Colombian President Gustavo Petro attributed both attacks to dissidents of the now disbanded Revolutionary Armed Forces of Colombia, a leftist guerrilla group commonly known as FARC.