16 years since the Bush administration launched its military intervention in Afghanistan, President Trump has announced his intention to increase the U.S. military presence in the country. As Statista's Niall McCarthy notes, there are approximately 8,400 U.S. troops on the ground in Afghanistan and reinforcements could start arriving within days. Trump's new strategy is set to extend the longest war in U.S. history and add even further to its already staggering cost.