Sean O'Neill has a front page piece in The Times arguing that the Edward Snowden leaks are the biggest blow to British intelligence for a generation.
One one level, this is curious. Snowden was not a British citizen, was not employed by a British intelligence agency and had few if any connections to the United Kingdom. Ostensibly he should have been able to access very little information that could damage this country.
The problem of course is that the British intelligence agencies long ago traded any independence they had for a 'seat at the top table' next to the United States. A 'what's ours is yours' approach seems to have ensured, with GCHQ at Cheltenham even accepting a stipend from the US to do snooping work for it. All of which meant that instead of only Tom, Dick or Harriet having access to classified British information, it was available to any Ed, Chuck or Earl the Yanks saw fit to give it to.
And in this case it was Ed.
Whether Edward Snowden has damaged British security is unclear to me. What is clear is that he should never have been in a position to do so - and if he was, the blame for that lies in the UK, not the USA.