Matt Pottinger, the White House's senior Asia adviser, is expected to become the top deputy for U.S. President Donald Trump's new national security adviser, Robert O'Brien, a senior administration official said Friday.
Pottinger, who is likely to take up his new post of deputy national security adviser within days, is a former journalist and ex-U.S. Marine who has played a key role in helping to forge China and North Korea policy since Trump took office in January 2017.