The west African state of Guinea-Bissau has said it will shoot down any aircraft that enters its airspace without permission.
Guinea-Bissau is a key transit point for international drug traffickers.
Prime Minister Martinho N'Dafa Cabi, who issued the order, said the measure is 'a means of threatening' drug traffickers 'who profit from our fragility.
'From today, whatever aircraft that enters our airspace without having informed the competent authorities will be destroyed.
'We have a state with rules, and there cannot be illegal flights over our territory', he said.
Guinea-Bissau, a former Portuguese colony in west Africa and the world's fifth poorest nation, has in recent years become a transit hub for European-bound cocaine originating from Latin America.
Traffickers exploit its weak self-defence capabilities to ship their contraband via the nation's Bijagos islands.
