Tighter Western sanctions against Russia for its actions in Ukraine may be necessary but could bring unwelcome consequences, explains CFR’s John Bellinger.

It seems unlikely that the plot to kill a Saudi ambassador involved the highest levels of Iran’s government, says expert Kenneth Katzman, including the plan to use non-Muslim proxies to carry it out.

While a nuclear-armed Iran presents "a terrible outcome strategically," a U.S. or Israeli military attack carries unforeseeable risks, says CFR President Richard Haass.

Michael Young, an expect commentator on Lebanese affairs, says he has little doubt the recent assassination of Christian leader Pierre Gemayel and other killings in Lebanon were carried out by Syria …

David Albright, a well-known expert on Iranian and North Korean nuclear programs, says the North Korean insistence on getting their benefits before carrying out their obligations can only slow down t…