A US terror alert issued this week about al-Qaida plots to attack targets in western Europe was politically motivated and not based on credible new information, senior Pakistani diplomats and European intelligence officials have told the Guardian. The non-specific US warning ... was an attempt to justify a recent escalation in US drone and helicopter attacks inside Pakistan that have set the country on fire", said Wajid Shamsul Hasan, the high commissioner to Britain. Hasan ... suggested the Obama administration was playing politics with the terror threat before next month's midterm congressional elections. "I will not deny the fact that there may be internal political dynamics, including the forthcoming midterm American elections," Hasan said. European intelligence officials also pointed the finger at the US, and specifically at the White House. "To stitch together [the terror plot claims] in a seamless narrative is nonsensical," said one well-placed official. By making it clear that the US drone strikes were pre-emptive, and were not in any way combating an imminent threat, European officials raised fresh questions ... about the legality of the attacks, which could be viewed as assassinations. They said Washington was the "driver" behind claims about a series of "commando-style" plots and that the CIA - perhaps because it was worried about provoking unwelcome attention to its drone strikes - was also extremely annoyed by the publicity given to them.