The international scene is buzzing this week. Leaders from around the world are meeting at the UN, a political assassination rocked Afghanistan and Congress continued to debate the federal budget, which will play a significant role in determining America's strength, both at home and abroad. Tonight, candidates for the presidency will have a chance to articulate a coherent view of America's role in the world at a debate in Orlando hosted by Fox News. Below are five questions - pulled from this week's headlines - that will gauge whether candidates agree with nonpartisan security experts about how America should lead in a rapidly changing world.

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This debate is the Commander-in-Chief test for both candidates. Senator McCain, by virtue of his military and congressional service, claims the mantle of experience; but he is tied to the Bush Presidency and still faces questions on his economic prowess and his temperament. He must show that his experience translates into superior knowledge and good judgment and that his approach won’t be four more years of the same. Senator Obama must show that he can hold his own with the Senate veteran and that he is ready to be Commander-in-Chief.

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