Violence has spiraled in Afghanistan since the departure of most foreign forces. The insurgents are pushing to take territory, more than 13 years after the U.S. led military intervention that toppled the Taliban from power. According to the U.N. the Taliban were responsible for 76 percent of civilian casualties in Afghanistan.
Amnesty International have claimed the Taliban commit war crimes by targeting civilians. As of 2015, tens of thousands of people have been killed in the Afghan war. The United Nations Security Council has established the International Security Assistance Force (ISAF) soldiers and civilian contractors. Over15,000 Afghan national security forces members have been killed. It is estimated that between 25,000 and 40,000 Taliban fighters have been killed and some 19,000 civilians have been killed during the clashes between U.S. forces and the Taliban. Since 2001, more than 5.7 million former refugees have returned to Afghanistan, but 2.2 million others remain refugees. The war in Afghanistan is the longest war in U.S. history.