The United States is deploying an additional 400 troops to help defeat the Islamic State group in Raqa, the Islamist militants' self-proclaimed capital in Syria, a spokesman for the US-led coalition said on Thursday.
"They are temporary forces," US Colonel John Dorrian told reporters in Baghdad, confirming a report in the New York Times, adding that the long-term authorized level of US troops in Syria would remain at 500.
IS are facing simultaneous offensives in northern Syria by government forces, Turkish-backed rebels, and a US-supported alliance of Kurdish and Arab fighters.
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