In December of 2014, President Obama declared the end of our combat mission in Afghanistan. Unfortunately, the Taliban didn’t agree, and they escalated their attacks against the Afghan government in 2015. It is one of the problems of fighting a war based on a calendar, instead of what is actually happening on the ground.
Eventually, President Obama agreed to slow the withdrawal of our troops from Afghanistan and, in January of last year, to allow our troops to do more. The fact that ISIS was showing up in Afghanistan gave the President an excuse for his action. By June, President Obama was allowing our forces to attack the Taliban and help Afghan forces keep control of provincial capitals.