WASHINGTON - The most senior U.S. military officer raised the possibility on Tuesday that American troops might need to take on a larger role in Iraq's ground war against Islamic State militants, but the White House stressed they would not deploy on a combat mission.
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BRASILIA - President Dilma Rousseff has lost ground to her main challenger, Marina Silva, less than three weeks before Brazil's presidential election, which will likely be decided in a close second-round runoff, a poll showed on Tuesday.
ATLANTA/MONROVIA - President Barack Obama on Tuesday called West Africa's deadly Ebola outbreak a looming threat to global security and announced a major expansion of the U.S. role in trying to halt its spread, including deployment of 3,000 troops to the region. | Video