NATO Heads of State and Government gather in London on 3 and 4 December for a meeting.
If one of the objectives is to celebrate the Alliance's 70th anniversary, leaders are also expected to look to the future. In recent weeks, the Alliance has been the subject of severe criticism from French President Emmanuel Macron.
According to one source, a "doctrinal, political, strategic and operational" response is needed for NATO. "What is the threat today? How should the end of the INF Treaty be...