March 9, 2007: Chief Justice Iftikhar Muhammad Chaudhry is suspended by President Musharraf as he refuses to oblige him by stepping down from his position. Chaudhary is accused of corruption, misdemeanour and stepping out of judicial parameters.
His suspension instigates a political and judicial turmoil over the country, Â which is considered one of the factors in toppling Musharraf's government.
The ruling is given by a 13 member bench, which unanimously decided that the petitions filed by President Musharraf were unfounded and faulty.October 6, 2007: Musharraf wins the presidential election but is challenged by the Supreme Court.
October 18, 2007: Former prime minister Benazir Bhutto returns from exile, procession to welcome Bhutto home is targeted by a suicide bomber resulting in the death of dozens.
November 3, 2007: President Musharraf declares a state of emergency and suspends the constitution and parliament simultaneously.
Musharraf also orders the house arrest of the Chief Justice and the judges responsible for his reinstatement.
December 15, 2007: President Musharraf lifts emergency rule, the constitution is restored.
December 27, 2007: Benazir Bhutto is killed while leaving a rally in Rawalpindi.
June 9, 2008: The long march is launched by lawyers, who seek the restoration of Iftikhar Mohammed Chaudhry as chief justice. The march concludes in Islamabad on June 14, demanding the ouster of President Musharraf.
August 8, 2008: Ruling coalition (PPP and PML-N) decides, for the third time, to reinstate Chaudhry.
August 18, 2008: President Musharraf resigns after PPP and PML-N launch impeachment proceedings against him.
August 28, 2008: PML-N leaves the coalition, as the government fails to reinstate the chief justice.
16 December 2009: The Supreme Court of Pakistan issues a petition to consider NRO 2007 to be null and void which provided immunity to the offenders of law, including money launderers and embezzlers. The ordinance of 2007 was drafted and approved by President Pervez Musharraf.
The court asks the National Accountability Bureau (NAB) to reopen the cases against President Zardari entailing the Swiss scam; allegations which the premier out rightly denies.
October 10, 2011: Mansoor Ijaz writes an article in Financial Times where he reveals that he delivered a memorandum written by a Pakistani official posted in the US to Admiral Mike Mullen. The revelation creates a frenzy of activity in Pakistan bringing the role of then ambassador to the United States, Hussain Haqqani, into question.
The memo is speculated to have been written just after Osama bin Laden's killing in Pakistan and allegedly seeks help from the US to rein in the country's military and intelligence agencies.
November 23, 2011: Chief of the main opposition party Nawaz Sharif files a petition in the Supreme Court to investigate the memo scandal, now dubbed as memogate.
Meanwhile, the army starts its own investigation into the events surrounding the subject.