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Blair was elected Labour Party leader in the leadership election of July 1994, following the sudden death of his predecessor, John Smith. Under his leadership, the party used the phrase "New Labour" to distance it from previous Labour policies. Blair declared opposition to the traditional conception of socialism, and declared support for a new conception that he referred to as "social-ism", involving politics that recognised individuals as socially interdependent, and advocated social justice, cohesion, equal worth of each citizen, and equal opportunity.Critics of Blair denounced him for having the Labour Party abandon genuine socialism and accepting capitalism.
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Blair's role as Prime Minister was particularly visible in foreign and security policy, including in Northern Ireland, where he was involved in the 1998 Good Friday Agreement. From the start of the War on Terror in 2001, Blair strongly supported the foreign policy of US President George W. Bush, notably by participating in the 2001 invasion of Afghanistan and 2003 invasion of Iraq. Blair is the Labour Party's longest-serving Prime Minister, the only person to have led the Labour Party to more than two consecutive general election victories, and the only Labour Prime Minister to serve consecutive terms more than one of which was at least four years long.
He was succeeded as Leader of the Labour Party on 24 June 2007 and as Prime Minister on 27 June 2007 by Gordon Brown. On the day he resigned as Prime Minister, he was appointed the official Envoy of the Quartet on the Middle East. In May 2008, Blair launched his Tony Blair Faith Foundation.[5] This was followed in July 2009 by the launching of the Faith and Globalisation Initiative with Yale University in the US, Durham University in the UK and the National University of Singapore in Asia to deliver a postgraduate programme in partnership with the Foundation