On December 22, 2016, U.S. President Donald Trump proclaimed in a tweet that "the United States must greatly strengthen and expand its nuclear capability until such time as the world comes to its senses regarding nukes," effectively challenging the world to re-engage in a race for nuclear dominance. The next day, Trump reiterated his position to "Morning Joe" host Mika Brzezinski of MSNBC, stating: "Let it be an arms race. We will outmatch them at every pass and outlast them all."