Looks now that Biden has won - Trump adviser

Speaking to the Global Security Forum, O'Brien said that while he hoped Trump would turn out to have won a second four-year term, he would work with a new administration headed by Biden and his vice presidential running mate, Kamala Harris.

"If there is a new administration, look, they deserve some time to come in and implement their policies," O'Brien said. "If the Biden-Harris ticket is determined to be the winner, and obviously things look like that now, we’ll have a very professional transition from the National Security Council, there's no question about it."

The Republican Trump has insisted the Nov. 3 election was "rigged" and that he will be declared the winner after a series of legal challenges in several states.

Trump has so far failed to produce evidence that could overturn Biden's 306-232 victory over Trump in the state-by-state Electoral College vote. States face a Dec. 8 “safe harbor” deadline to certify their elections and choose electors who will officially select the new president on Dec. 14.