Donald Trump has defied expectation by pledging to increase the number of US troops in Afghanistan. In an address from Arlington, Virginia, the president announced that, following a review of the US strategy in Afghanistan, he had concluded that hasty withdrawal would be a mistake and that “our nation must seek an honourable and enduring outcome worthy of the tremendous sacrifices that have been made”.
This, he said, involves using “all instruments of American power – diplomatic, economic, and military – toward a successful outcome”.
Ahead of Trump’s statement, it was widely reported that the White House was considering

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