"A cynical canard at best" [LINK]
There's also the question of why tip off the perp's before arresting them, but concision is key.
Leroy Johnson is missing the point when he unfavorably contrasts President Bush's use of the military in Iraq with the "brilliant investigative police work" that foiled the latest terrorist threat. Scotland Yard's arrests were based largely on information culled from the intelligence agencies of Pakistan, Great Britain, and the United States, which are fundamentally military in orientation. If the would-be bombers had taken up residence in a hostile country, then the threat of military action would have been the appropriate response. It should be obvious that the anti-terrorist efforts of the British police are more visible than our own due to their more significant threat of domestic terrorism.