After 18 months in the making, the government’s Defence Investment Plan should have provided clarity on Britain’s military future. Instead, it obscures spending, repackages old announcements and delays the hard decisions until well into the next decade, writes defence expert Francis Tusa S o, a year and four months after the formal process of drawing up a plan about how to spend extra defence cash, the Defence Investment Plan (DIP), this is what we get ? A 70 (ish)-page document which spends a