Here is a look at some highs and lows in relations between India and Pakistan. (Agencies)
1947 - Britain divides its Indian empire into secular but mainly Hindu India and Muslim Pakistan, triggering one of the greatest and bloodiest migrations of modern history.
1947/48 - India and Pakistan go to war over Kashmir. The war ends with a UN-ordered ceasefire and resolution seeking a plebiscite for the people of Jammu and Kashmir to decide whether to become part of India or Pakistan.
1965 - India and Pakistan fight their second war over Kashmir. Fighting ends after the United Nations calls for a ceasefire.
1971 - Pakistan and India go to war for a third time, this time over East Pakistan, which becomes independent Bangladesh.
1972 - Pakistani Prime Minister Zulfikar Ali Bhutto and Indian Prime Minister Indira Gandhi sign agreement in Indian town of Simla over principles meant to govern relations.
1974 - India detonates its first nuclear device.
1989 - Separatist revolt starts in Indian Kashmir. India accuses Pakistan of arming and sending Islamist militants into Indian Kashmir, which Pakistan denies.
1998 - India carries out nuclear tests. Pakistan responds with its own tests.
February 1999 - Indian Prime Minister Atal Bihari Vajpayee holds summit with Pakistani counterpart Nawaz Sharif in Lahore.
1999 - India and Pakistan wage brief conflict in the mountains above Kargil on the Line of Control.
July 2001 - Summit between Pakistani leader General Pervez Musharraf and Vajpayee in Agra ends in failure.
December 2001 - Militants attack Indian Parliament. India blames Pakistan-based Kashmiri separatist groups Lashkar-e-Taiba (LeT) and Jaish-e-Mohammad. One million troops are mobilized on either side of the border; war only averted months later in June 2002.
2003 – Pakistan and India agree ceasefire on the Line of Control.
2004 - The two countries launch a formal peace process.
November 2008 - Gunmen launch three days of multiple attacks in Mumbai, killing 166 people. India blames Pakistan-based militants and freezes talks with Pakistan.
February 2009 - India cautiously welcomes Pakistan's probe into Mumbai attack.
Pakistan admits the attack was launched and partly planned from Pakistan.
June 2009 - Indian Prime Minister Manmohan Singh and Pakistani President Asif Ali Zardari meet on the sidelines of an international gathering in Russia. Singh tells Zardari he wants him to ensure militants cannot operate from Pakistan.
July 2011 - Foreign ministers of India and Pakistan hold talks in New Delhi, hailing a "new era" in ties.
April 2012 - Zardari meets Singh in New Delhi in the highest-level meeting on each other's soil in seven years.
November 2012 - India secretly hangs the lone survivor of the Pakistan-based militant squad responsible for the 2008 Mumbai attacks.
January 2013 - India accuses Pakistan of ‘barbaric and inhuman’ behaviour after two Indian soldiers are killed in a firefight in Kashmir and at least one of the bodies is mutilated. Peace talks stall and Indian Prime Minister Singh says there can be no ‘business as usual’.
February 2013 - India hangs a Kashmiri man for the 2001 attack on its Parliament that New Delhi blamed on militants backed by Pakistan.
May 2013 - Nawaz Sharif returns to power in Pakistan vowing to improve relations with India and ease decades of mistrust.
July 2013 - Pakistan proposes dates for resuming talks at a senior bureaucrat level on disputed water and territorial issues, possibly in August and September. Indian officials say they are also considering a proposal by Islamabad for Sharif and Singh to meet in New York in September, on the sidelines of the UN General Assembly.
August 2013 - Defence Minister AK Antony says the number of infiltration attempts from the Pakistani side of Kashmir is double that reported in January-August 2012. There has also been an 80 percent increase in ceasefire violations over the same period.
Here is a look at some highs and lows in relations between India and Pakistan.