To stop North Korean nukes, the United States should learn from its own history with China.
Putting real pressure on Pyongyang requires deft management of a complicated alliance.
The Trump administration's staffing gaps pose serious problems for the United States.
Russia presents security challenges to the United States and its allies for which the Trump administration has yet to indicate any kind of a policy direction or goals.
If Trump doesn't do something about Pyongyang, forget "live long and prosper."
Jon Wolfsthal is a globally recognized expert on nuclear weapons and nonproliferation policy. A nonresident fellow at Harvard University’s Belfer Center for Science and International Affairs and the Carnegie Endowment for International Peace, he was President Barack Obama’s special assistant and senior director at the National Security Council for arms control and nonproliferation. He is the former deputy director of the Center for Nonproliferation Studies at the Middlebury Institute of International Studies at Monterey. He has served on site in North Korea, helped negotiate an arms control agreement with Russia, and served as Vice President Joe Biden’s nuclear security advisor from 2009 to 2012.