Buying the biggest and best technology is always going to be high risk and expensive.
Q fever explained.
The battle for military power intensifies as Britain faces mounting threats alongside economic uncertainty.
Worried that a shortage of language speakers could be a security risk, the army now gives soldiers cash incentives to learn them.
Splits over Trident can create stalemate between the UK's forces, but the public needs to debate renewing the deterrent before time runs out.