America has decided to withdraw from the conflict in Afghanistan; during the past twenty years, there have been an estimated 100,000 to 150,000 casualties among opponent militias and the Afghan population, as well as about 5,000 Western casualties among the US mission, the NATO mission and private military contracting forces. An intervention that began in 2001 as a response to the terrorist attack on the Twin Towers in New York on September 11 th has, over two decades, turned into a war without end, in which the United States has seen its credibility as a world power and guarantor of global order put to the test. This is precisely why the decision to withdraw is controversial, in Washington and in other capitals. It has the air of a surrender in the face of domestic opinion marked by war-weariness; it is not known whether the conflict will really end; it is not known who will fill the void left by the United States and NATO, and how; the knock-on effects that the Afghan shock will hav...