From NBC's Domenico Montanaro
The president will likely receive a rock-star reception abroad, as he did during the campaign, but with recent criticism from some European leaders -- resisting the president's call for stimulus' and increased troops in Afghanistan -- Obama faces a crucial foreign policy test early in his young presidency.

The president will have a lot on his plate during the trip, but it will provide a measure of his influence, particularly in reference to the world economy, Afghanistan, and the Muslim world.

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