Rex Tillerson: “I do not believe nations are entitled to a sphere of influence over other sovereign nations.”

I think the Russians, too, are beginning to understand the threat that North Korea poses to them.

Interim local political arrangements that give voice to all groups and ethnicities supportive of Syria's broader political transition must emerge with international support.

The dedicated men and women of the State Department and USAID carry out the important and often perilous work of advancing America's interests every single day.

The United States and Russia certainly have unresolved differences on a number of issues. But we have the potential to appropriately coordinate in Syria in order to produce stability and serve our mutual security interests.