Oh, it's just
Gold, isn't it?
Commitment to a large standing army, a navy of large warships around our coastline, squadrons of fighter planes and a cripplingly expensive missile defence system is therefore unnecessary. Any threat of invasion that might arise in the future is so remote that realignment of the UK military and defence preparations would be possible long before any invasion occurred.
How can you
realign what you do not have?
The solution?
..pen friend schemes
p.s. the "missile system" is in Bart's back pocket