Kashmir legislative assembly attack. India claimed that the attacks were carried out by two Pakistan-based terror groups, the Lashkar-e-Taiba and Jaish-e-Mohammad, both of whom India has said are backed by Pakistan's ISI a charge that Pakistan denied. Tensions de-escalated following international diplomatic mediation which resulted in the October 2002 withdrawal of Indian and Pakistani troops from the international border. 2007 Samjhauta Express bombings The 2007 Samjhauta Express bombings was a terrorist attack targeted on the Samjhauta Express train on 18 February. The Samjhauta Express is an international train that runs from New Delhi, India to Lahore, Pakistan, and is one of two trains to cross the India-Pakistan border. At least 68 people were killed, mostly Pakistani civilians but also some Indian security personnel and civilians. 2008 Mumbai attacks The 2008 Mumbai attacks by ten Pakistani terrorists killed over 173 and wounded 308. The sole surviving gunman Ajmal Kasab who was arrested during the attacks was found to be a Pakistani national. This fact was acknowledged by Pakistani authorities. In May 2010, an Indian court convicted him on four counts of murder, waging war against India, conspiracy and terrorism offences, and sentenced him to death. India blamed the Lashkar-e-Taiba, a Pakistan-based militant group, for planning and executing the attacks. Indian officials demanded Pakistan extradite suspects for trial. They also said that, given the sophistication of the attacks, the perpetrators "must have had the support of some official agencies in Pakistan". In July 2009 Pakistani authorities confirmed that LeT plotted and financed the attacks from LeT camps in Karachi and Thatta. In November 2009, Pakistani authorities charged seven men they had arrested earlier, of planning and executing the assault. On 9 April 2015, the foremost ringleader of the attacks, Zakiur Rehman Lakhvi was granted bail against surety bonds of in Pakistan. The Indian intelligence agency RAW is claimed to be working in cover to malign Pakistan and train & support insurgents for Balochistan conflict. Weapons of mass destruction India has a long history of development of nuclear weapons. Origins of India's nuclear program dates back to 1944, when started its nuclear program soon after its independence. In the 1940s–1960s, India's nuclear program slowly matured towards militarisation and expanded the nuclear power infrastructure throughout the country. Decisions on the development of nuclear weapons were made by Indian political leaders after the Chinese invasion and territorial annexation of northern India. In 1967, India's nuclear