Leaked documents reveal Russian fighter jet's near miss with British spy plane.

A Russian fighter jet almost shot down an unarmed British spy plane last September, according to leaked US military documents. The incident occurred over international airspace off the coast of Crimea, which Russia has occupied since 2014. The Pentagon has made a formal referral to the Department of Justice after the leaks surfaced. The incident would have had serious implications on NATO member states, as Article 5 of NATO's treaty declares that an armed attack against one member state would constitute an attack against all of them.