Clash over Syria reveals head-to-head conflict between global powers reminiscent of Cold War, say analysts
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US working with NATO allies, other countries to confront terrorism
Obama and Castro meet after more than 50 years of hostilities between two nations.
'Assad and his close associates, with blood on their hands, cannot be part of a political solution.'
President says civil rights violations in Ferguson is not typical but neither was it 'a complete aberration.'
