The head of Nato has piled further pressure on the UK to up defence spending, as he suggested members of the alliance should be looking to 'equalise' the US contribution.Secretary-general Mark Rutte said allies will find themselves 'in great difficulty' in the coming years if they stick with the current 2% GDP alliance spending target.The former Dutch prime minister is thought to be pushing for members to commit to spending 3.5% on the military, with a further 1.5% on defence-related measures

The head of Nato has piled further pressure on the UK to up defence spending, as he suggested members of the alliance should be looking to 'equalise' the US contribution.Secretary-general Mark Rutte said allies will find themselves 'in great difficulty' in the coming years if they stick with the current 2% GDP alliance spending target.The former Dutch prime minister is thought to be pushing for members to commit to spending 3.5% on the military, with a further 1.5% on defence-related measures