Candidate set to speak Thursday evening at Reagan Presidential Library in California
President Joe Biden has named Gen Charles "CQ" Brown Jr to be the next chairman of the Joint Chiefs of Staff, the top military officer in the US.
Donald Trump's hour-plus appearance on a cable news town hall forum on Wednesday night was barely over when his political rivals - both announced and prospective - began firing out tweets, statements and press releases attacking the Republican front-runner for next year's White House election.
