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GOOSE CREEK, S.C. (AP) -- South Carolina U.S. Sen. Lindsey Graham says he's convinced that Syrian President Assad used chemical weapons on his own people.

Graham told reporters in Goose Creek on Tuesday that taking action against Syria in response to the situation is not a question of yes or no, but rather a question of bad or worse choices.

He says if there is no U.S. response, Iran will not believe America's resolve to block Iran from developing nuclear weapons. Graham also says those nuclear weapons in the hands of terrorists could result in a bomb coming to Charleston Harbor.

He says he's working to convince South Carolinians weary of war that the situations in Syria and Iran are linked. Graham says Syria could destabilize the entire Middle East.

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