cynical perhaps, but as a moot point in times of mass turmoil in govt circles, extreme financial pressure and an apparent loss of faith/trust in lords and masters by the populous at large - which is now perceived as the bigger vote winner; investing in the future of homeland security/SAR or investing in the support of UK troops fighting overseas in Afghanistan?
Put another way is joe public more likely to vote the govt back in if they are seen to be looking after the tax payer (& non tax payer!) at home or the boys & girls on the front line?