In a statement on today's Nuclear Posture Review, President Obama said new restrictions on any American use of nuclear weapons are part of a long-term agenda to eventually eliminate all such weapons worldwide. Obama will take this agenda this week to Prague, where he signs a new arms reduction deal with Russia.

Rwandan exchange students and their American counterparts from Massachusetts recently received encouragement from Senator John Kerry, the son of a U.S. foreign service officer, in their efforts to foster greater cultural understanding through examining the past.

Perhaps realizing that engagement alone projects weakness, the administration has begun in some cases to turn to sticks. On the peace process, it is the Israelis who are now the recipients of President Obama's ire.

India has long been regarded as an American ally but a series of missteps by the United States may be driving a strategic American partner directly into China's embrace.

Geithner reckons that a series of meetings lined up between him and his Chinese counterparts over the next three months will be very "critical" to bring about the policy changes from China that may lead to a "more balanced", and sustainable global economy.

Cuban and US diplomats have held a rare meeting at the United Nations that focused on aid efforts for quake-hit Haiti, Cuban Foreign Minister Bruno Rodriguez Parrilla said.

As a candidate, Barack Obama promised to withdraw from Iraq, "finish the fight against al-Qaida and the Taliban," shut down Gitmo and break through the impasse with Iran. But as president, Obama is learning that conducting U.S. foreign policy is far more difficult than simply critiquing it.

Along the gradient of power, there's a possible mix of "soft" and "hard" varieties. The public diplomacy originating at the U.S. State Department is commonly associated with the "soft" power of peaceful persuasion and cultural appeal...