The U.S. ambassador to the United Nations is hosting a global town hall at Twitter headquarters to talk foreign policy with users of the online messaging service. Ambassador Susan Rice will be taking questions from around the world Thursday morning via Twitter and from employees at the company's San Francisco office.

The new African Union (AU) team of experts left Addis Ababa on Sunday for Abidjan in a fresh bid to resolve Côte d’Ivoire’s political crisis.

Several hundred people gathered on Saturday afternoon near the United Nations for a demonstration in support of the recent antigovernment protesters in Egypt. Participants came from New York City and beyond, buoyed, they said, by the hope that a wave of clashes taking place in Egyptian cities over the last few days might sweep Mr. Mubarak from office and usher in democratic reforms.

Bolivia has launched a diplomatic offensive to try to end an international ban on chewing coca leaf. Foreign Minister David Choquehuanca is on a European tour in a bid to drum up support for taking coca off a UN treaty on banned drugs.

Back in 2002, the Indian writer Arundhati Roy brilliantly satirised the official excuses for the invasion of Afghanistan . “It’s being made out that the whole point of the war was to topple the Taliban regime and liberate Afghan women from their burqas,” she said. “We are being asked to believe that the US marines are actually on a feminist mission.”

Mia Farrow is an acclaimed actress and humanitarian activist who, for the past 10 years, has served as a Goodwill Ambassador to the UN Children's Fund (UNICEF)... Recently, she completed a personal project to match photographs taken during her travels to the John Lennon song, "Imagine." The video can be seen on YouTube.

The United States–which holds the rotating presidency of the Security Council this month–is doing things a bit differently in the chamber today. About two weeks ago, Ambassador Rice solicited feedback from young people around the world for the kinds of topics and issues they would like taken up by the Security Council.

UN Secretary General Ban Ki-moon said on Friday the publication of leaked US diplomatic exchanges by whistle-blower website WikiLeaks is hurting diplomacy. "It is unfortunate that these confidential documents have been leaked," Ban said at a news conference in New York.