A U.S. 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, which despite its vagueness led Britain, France and other countries to raise their overseas terror alert levels, 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.