Boris Johnson has said the UK will spend 2.5 of GDP on defence by the end of this decade. Speaking at the NATO conference in Madrid, the Prime Minister said: "We need to invest for the long-term in vital capabilities like future combat air whilst simultaneously adapting to a more dangerous and more competitive world.” Mr Johnson also described the NATO alliance as "united" and in "robust health" as the Madrid summit drew to a close. Report by Jonesia.