There are two police wings: the Vanuatu Police Force (VPF) and the paramilitary wing, the Vanuatu Mobile Force (VMF). Altogether there were 547 police officers organised into two main police commands: one in Port Vila and one in Luganville. In addition to the two command stations there were four secondary police stations and eight police posts. This means that there are many islands with no police presence, and many parts of islands where getting to a police post can take several days. There is no purely military expenditure. In 2017, Vanuatu signed the UN treaty on the Prohibition of Nuclear Weapons.