new prime minister, Tony Blair, and Bill Clinton both used the expression "Third Way" to describe their centre-left ideologies. In August 1997, the American people expressed solidarity with the British people, sharing in their grief and sense of shock on the death of Diana, Princess of Wales, who perished in a car crash in Paris. Throughout 1998 and 1999, the United States and Britain sent troops to impose peace during the Kosovo War. Tony Blair made it a point to develop very close relationships with the White House. War on Terror and Iraq War 67 Britons were among the 2,977 victims killed during the terrorist attacks on the World Trade Center and elsewhere on September 11, 2001. Al-Qaeda was the attacker. Following the attacks, there was an enormous outpouring of sympathy from the United Kingdom for the American people, and Blair was one of Bush's strongest international supporters for military action against Al-Qaeda and the Taliban. Indeed, Blair became the most articulate spokesman. President Bush told Congress that "America has no truer friend than Great Britain". The United States declared a War on Terror following the attacks. British forces participated in NATO's war in Afghanistan. Blair took the lead (against the opposition of France, Canada, Germany, China, and Russia) in advocating the invasion of Iraq in 2003. Again Britain was second only to the US in sending forces to Iraq. Both sides wound down after 2009, and withdrew their last troops in 2011. President Bush and Prime Minister Blair provided sustained mutual political and diplomatic support and won votes in Congress and parliament against their critics at home. During this period Secretary of Defense Donald Rumsfeld said that "America has no finer ally than the United Kingdom." The 7 July 2005 London bombings emphasised the difference in the nature of the terrorist threat to both nations. The United States concentrated primarily on global enemies, like the al-Qaeda network and other Islamic extremists from the Middle East. The London bombings were carried out by homegrown extremist Muslims, and it emphasised the United Kingdom's threat from the radicalisation of its own people. After claims by Liberty that British airports had been used by the CIA for extraordinary rendition flights, the Association of Chief Police Officers launched an investigation in November 2005. The report was published in June 2007 and found no evidence to support the claim. This was on the same day