In 1963, a policy of "Konfrontasi" (Confrontation) against the newly formed Federation of Malaysia was announced by the Sukarno regime. This further exacerbated the split between the left-wing and right-wing military factions, with the left-wing faction and the Communist Party taking part in guerrilla raids on the border with Malaysia, while the right-wing faction was mostly absent from the conflict (whether by choice or orders of Sukarno is not clear).