The Guardian, along with the New York Times and the German weekly Der Spiegel, has today published a series of documents that give a detailed and often disturbing picture of the conflict in Afghanistan.
These disclosures come from more than 90,000 records of incidents and intelligence reports about the conflict obtained by the whistleblowers' website Wikileaks, in what has been described as one of the biggest leaks in US military history.
The three news organisations were given access to the Afghan war logs before publication to verify their authenticity and assess their significance. For the past few weeks, a team of investigative reporters, regional specialists and database experts has been working on the story.
David Leigh, the Guardian's investigations editor, answered your questions in a live web chat.
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