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By Steve Holland ABOARD AIR FORCE ONE (Reuters) - President Barack Obama embarked on a three-day trip on Monday with former President George W. Bush, leading a U.S. contingent to attend a memorial service in South Africa for the late Nelson Mandela. On board Air Force One for a flight estimated at 16 hours were Obama and his wife, Michelle, Bush and his wife, Laura, and former Secretary of State Hillary Clinton. Flying separately to Johannesburg were former Presidents Bill Clinton and Jimmy Carter.
A Paris auction of sacred objects from the Hopi and San Carlos Apache Native American tribes kicked off Monday despite objections from the United States and activists. The US embassy had asked Paris to suspend the sale of the colourful ceremonial masks, head-dresses and other objects after the failure Friday of a legal challenge by advocacy group Survival International on behalf of Arizona's Hopi tribe.