While this trade has worked quite well, there are still some nagging doubts.

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Moreover, the coalition has nagging doubts about who exactly it might be arming.

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There is no shortage of nagging doubts regarding Nokia.

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But just in case there's still nagging doubts, let me say it as plainly as I can: If you buy a car from Chrysler or General Motors, you will be able to get your car serviced and repaired, just like always.

WHITEHOUSE: President Obama on Stabilizing the Auto Industry