So long as you act in good faith and without discrimination, you can lawfully act on your best available information, even if it turns out to be wrong.

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The Kurds say that they simply have no faith that Mr Jaafari will act on his commitments.

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Will Israel, having lost faith in President Obama and Secretary of State Clinton to defend it, decide to act on its own and take out Iranian nukes?

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But more than anything, it will take a willingness to look past our differences, to act in good faith, to refuse to continue the failures of the past, and to take on this challenge together -- for the benefit not just of this generation, but generations to come.

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