The U.S. will keep 8,400 American troops in Afghanistan through the end of the year, about 3,000 more than had been planned, President Obama announced Wednesday.

Obama made the announcement in the White House one day before departing for a NATO summit in Poland and as the Afghanistan security situation remains “precarious.” Prior to the announcement, the plan had been to drawdown from the current number of 9,800 troops to 5,500 by the end of the year.