The Pul-e-Sukhta bridge in Kabul is synonymous with hard drug use. After many NGOs and charities fled Afghanistan, drug addicts have been largely left on their own. And the number of users is swelling, residents say.

After the 9/11 attacks, Jorge Roldan was one of about 3,000 illegal workers who helped clean up Ground Zero. Like many others, he got sick from toxins at the site, but his immigration status made it hard to get the help he needed.

Director Oliver Stone, actresses Dylan Penn and Lea DeLaria and photographer David Turnley reflect on the September 11 attacks, 20 years on. As one of the few photographers who recorded the Twin Towers fall right in front of him, Pulitzer Prize winner David Turnley takes us through his powerful images and takes us back to the day that changed the world forever.

This year marks the 20th anniversary of the 9/11 attacks on the United States that left nearly 3,000 people dead. The Al-Qaeda plane hijackings of September 11, 2001 were the first foreign attack on the US mainland in nearly two centuries. It ruptured America's sense of safety and plunged the West into war in Afghanistan. In the lead up to the anniversary, AFP spoke with survivors and those closest to the victims, piecing together the timeline of the fateful day that would reshape the course of US history.