February 10, 2004 - Becomes the first leader to visit Libya since Moammar Gadhafi's promise to end development of weapons of mass destruction.
April 20, 2005 - Resigns but is sworn in as the prime minister again after forming a new government three days later, on April 23.
September 25, 2005 - Cleared of charges of allegedly funneling money in 1991 through the holding company All Iberian to fund the Socialist Party of former Prime Minister Bettino Craxi and of false bookkeeping/ cover up of the transfers.
March 10, 2006 - Prosecutors decide that Berlusconi should be put on trial for judicial corruption.
April 19, 2006 - The Italian Supreme Court confirms Romano Prodi's April 9 election win, but Berlusconi doesn't concede and resign until May 2.
October 30, 2006 - Berlusconi and British lawyer David Mills are ordered to stand trial on charges of corruption. Berlusconi is accused of paying Mills $600,000 in exchange for favorable testimony in two cases involving the former prime minister.
November 26, 2006 - Faints while addressing a rally on live television. Doctors later state that he has an irregular heartbeat.
December 19, 2006 - Receives an implantable pacemaker at the Cleveland Clinic.
January 16, 2007 - Charges of tax fraud before 1998 and receipt of stolen goods are dropped against Berlusconi and Mills, because the offenses have passed the statute of limitations. Charges of balance sheet fraud, tax fraud and embezzlement in 1999 and 2000 still stand.
March 13, 2007 - The corruption trial against Berlusconi and David Mills begins. Both Mills and Berlusconi face prison terms from four to twelve years if convicted.
September 24, 2007 - The trial is moved to London to aid witnesses who claim traveling to Italy would be too difficult.
February 21, 2008 - Berlusconi's trial is postponed until after the election.
April 14, 2008 - Wins the Italian parliamentary elections to become the prime minister for the third time.
May 8, 2008 - Is sworn in.
October 7, 2009 - Italy's Constitutional Court strikes down a 2008 law that would have given Berlusconi immunity from prosecution.
December 13, 2009 - Berlusconi is attacked at a rally in Milan and suffers a broken nose and several broken teeth.
December 14, 2010 - Survives parliamentary confidence vote in the lower house by three votes. The win sparks a demonstration in Rome where nearly 100 are injured.
January 14, 2011 - Magistrates in Milan reveal they are investigating whether Berlusconi paid for sex with an underage girl and then abused his power by trying to cover it up.
January 18, 2011 - Italian media leak transcripts of wiretapped conversations with Karima El Mahroug, the alleged underage girl Berlusconi had sex with when she was 17, and with other women.
February 15, 2011 - An Italian judge rules that Berlusconi will be tried on charges of sex with an underage prostitute and abuse of power.
February 28, 2011 - Trial on charges of tax fraud resumes. Berlusconi is accused of reducing Mediaset's tax liabilities by purchasing U.S. movie rights at inflated prices and then creating illegal slush funds.
March 21, 2011 - The corruption trial against Berlusconi concerning David Mills resumes.
April 6, 2011 - The trial on having sex with an underage prostitute and abuse of power opens.
April 11, 2011 - The fraud trial resumes in Milan.
July 8, 2011 - Tells Italian daily newspaper, La Repubblica that he will not run again when his term expires in 2013.