LAUSANNE, Switzerland - The United States said it was prepared to work past a midnight deadline into Wednesday if progress was being made towards clinching a preliminary nuclear deal between Iran and global powers. | Video
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LONDON - Brent crude oil dropped towards $55 a barrel on Tuesday as Iran and six world powers entered a final day of talks over a nuclear deal that could see the energy-rich country increase oil exports to world markets.
WASHINGTON - An armed prisoner who fled a suburban Washington hospital with a guard's gun on Tuesday was recaptured in the U.S. capital after a nine-hour manhunt, police said. | Video
ABUJA - Three decades after seizing power in a military coup, Muhammadu Buhari became the first Nigerian to oust a president through the ballot box, putting him in charge of Africa's biggest economy and one of its most turbulent democracies.
TOKYO - Japanese Prime Minister Shinzo Abe's push to allow Tokyo to come to the aid of an ally under attack will pave the way for closer cooperation between U.S. and Japanese forces across Asia, a top U.S. commander said on Tuesday.
TOKYO/TAIPEI - Japan remains cautious about signing up to the China-led Asian Infrastructure Investment Bank (AIIB), indicating that Tokyo will miss the March 31 deadline for application, but both Taiwan and Norway said they would seek to join the institution.
BOSTON - Accused Boston Marathon bomber Dzhokhar Tsarnaev's older brother, Tamerlan, researched radio transmitters, fireworks and gun stores in the weeks leading up to the 2013 attack that killed three people, a computer expert testified for the defense on Tuesday.
ISTANBUL - Gunshots and explosions were heard and smoke was visible on Tuesday evening from a building where members of a Turkish far-left group have been holding a prosecutor hostage in Istanbul, a Reuters witness said. | Video