What Chinny Crewman said.
The Tories talk the talk but regularly fail to walk the walk, preferring to take a business approach to Defence, leaving us with the absolute bare minimum to get the job done and with no redundancy when things change or go wrong. Invariably business being the only ones to benefit from their spending.
Labour try to walk the walk, not because they believe in Defence but because we get caught up in their general desire to grow the State. As a result their ideas are often lacking analytical rigour and nearly always aren't effectively funded.
Both could write what they understand about strategic thinking on a post-it note.