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A sad timeline of militant attacks in Pakistan

A sad timeline of militant attacks in Pakistan

Militant attacks in Pakistan have killed hundreds of people over the last three years, including many women and children. On Friday, security forces carried out sweeping raids, gunning down and arresting dozens, a day after a massive suicide bombing killed 88 worshipers at a Sufi shrine in the country's south.

The attack, claimed by an Islamic State affiliate in Pakistan, raised questions about the ability of the authorities to rein in militant groups despite several recent offensives targeting insurgents.

Here are some of the deadliest attacks in Pakistan in the last three years:


Feb. 16: An Islamic State suicide bomber...