Welcome to madrid, where nato leaders have agreed the strategic concept, the blueprint for this alliance. it will guide, it will show how this defence alliance will work in the future together. it's a crucial document, only second to the treaty itself, signed in 1949, and of course leading to the creation of nato itself. nato leaders agreeing the strategic concept on wednesday and this is significant because it completely changes the strategic concept from 2010, when the landscape, security environment across this region, was very different. now today the leaders of nato are describing russia ...