Sungtae (Jacky) Park is research associate at the Council on Foreign Relations.
On January 2, President-elect Donald Trump tweeted that a nuclear North Korea capable of hitting parts of the United States “ won’t happen .” Yet, North Korea has been advancing its nuclear and missile capabilities at an alarming pace, and he will not be the first president to face the North Korean threat. George H. W. Bush, Bill Clinton, George W.
