The Defence Secretary has announced that more than 30 helicopters will be retired early, along with 5 ships, and 46 drones, all of them he calls ‘outdated capabilities’.

Most significant, after years of ‘will they, won’t they’, the Royal Marines amphibious assault ships, HMS Albion and HMS Bulwark, get the axe. Critics call it a black day for the Marines but the Defence Secretary insists they have a bright future.

So which is it? Professor Michael Clarke explains how each of the cuts will, or won’t, affect our military capabilities. He also analyses the shake-up at the very top of the forces giving the Chief of Defence Staff more power over all the services.

And why is all this being announced with months of work still to do on the Defence Review, with more big change ahead?