Candidate Obama opposed new free-trade agreements and wanted to renegotiate NAFTA. A global slump has changed his mind.
The US deployed antimissile defense systems in response to reports that North Korea could launch a long-range missile toward the island early next month.
Tens of thousands rallied behind defeated presidential candidate Mir Hossein Mousavi again on Wednesday. Soccer players at a World Cup qualifying match wore green to show their solidarity.
In South, decisive tone of 'joint vision' is seen as sending a strong message to the North.
Other countries, too, are part of the effort to block the transport of nuclear materials.
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The international community will not back down in the face of North Korea's threats, the US president says at a White House meeting Tuesday.