David Cameron will pledge an extra £12 billion ($18.2 billion, 17.1 billion euros) for the military Monday as he pushes Britain's parliament towards a vote on joining air strikes in Syria within days.
The Strategic Defence and Security Review (SDSR) will map out Britain's defence strategy for the next five years after this month's Paris attacks which killed 130 people showed the Islamic State (IS) group's ability to strike in the heart of Europe.