Nimrod MRA4 has gone but the requirement has not. Money is in short supply but if a system can bought by giving up the funds currently allocated to other, presumably lower priority, programmes then so be it.
But surely if the RN can find other, lower priority, programmes to sacrifice, they should have done so in the first place! It just strikes me that this is a prime example of non-joint, muddled and self-centred thinking that is exactly what Liam Fox needs to stamp on if he's to avoid overspends and waste in the future!