The U.S. declaration that the Islamic State has committed genocide must be followed by prosecutions to deter future abuses, says expert Naomi Kikoler.

Pavel Felgenhauer, an independent defense analyst in Moscow, is pessimistic about a Russia-U.S. rapprochement in part because of enduring concerns about U.S. missile defense system plans.

Richard N. Haass, CFR president and a well-known Middle East expert, says what President Bush’s Iraq speech “represented more than anything else was the re-Americanization of the effort.”

Gerald M. Steinberg, an Israeli expert on military and diplomatic affairs, says behind the stepped-up fight against Hezbollah in Lebanon is the Israeli perception that Hezbollah is a "proxy" for Iran…

Robert E. Hunter, who was U.S. ambassador to NATO during the Clinton administration, says he does not expect NATO foreign ministers to enlarge the alliance to include Georgia or Ukraine at the next m…