Washington (CNN) Officials throughout the Trump administration are bracing themselves for the President to make an announcement about the US presence in Afghanistan, similar to his declaration Wednesday that the US will withdraw the military from Syria, informed administration sources tell CNN.

The sources cautioned that the President has not yet made a final decision, but officials are concerned and convinced that he might do so, and soon.

The US has about 14,000 troops in Afghanistan, most of which are present as part of a larger NATO-led mission to train, advise and assist Afghan forces. Any withdrawal would be complicated by the fact that the United States is part of NATO's Resolute Support mission.

Long critical

Trump has long been critical of the US presence in Afghanistan, which began in 2001 after the September 11 terrorist attacks. He has questioned US investment in the country, asking in 2011, "When will we stop wasting our money on rebuilding Afghanistan? We must rebuild our country first."

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