President Obama has outlined that he will work with Congress to ramp up US support for Syrian opposition groups, which he says is the best alternative to President Bashar al-Assad.
Speaking to the US Military Academy at West Point, Obama told the crowd how the United States will confront terrorism in Middle Eastern regions.
He said: "We will step up our efforts to support Syria's neighbours - Jordan and Lebanon, Turkey and Iraq - as they host refugees, and confront terrorists working across Syrian borders."
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The Office for National Statistics said gross domestic product grew by 0.1%.
William's comments came during a surprise appearance at an event scheduled for just his brother.
Matt Campbell, who collapsed just a few miles from the finish line, had hoped to raise £2,500.