Claim: Tony Blair is a leader.
Evidence: Anthony Charles Lynton Blair -LRB- born 6 May 1953 -RRB- is a British politician who served as Prime Minister of the United Kingdom from 1997 to 2007 and Leader of the Labour Party from 1994 to 2007.
The Prime Minister of the United Kingdom is the head of Her Majesty 's Government in the United Kingdom.