Nick Clegg got a relatively easy ride from the members of the Saturday morning homework club in Adamsdown on Saturday (despite atrickyquestion as to whether he is "friends" with David Cameron - answer: "We work together") but a tougher time from a few dozen anti-cuts protesters outside the conference venue around the corner as he arrived for his speech.
Balancing the competing military and political needs is atricky equation for Pentagon planners, and it brings into focus a key question: How many troops are needed to fight each war?