They ignore the fact that crises always have a root cause, and they treat crises as if they just drop in from the sky at any moment.

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In previous crises over decommissioning it has always been the Ulster Unionists, led by David Trimble, who have ultimately given ground.

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In the movies, officials facing national security crises are always on the phone and shuffling papers.

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"There are a lot of crises in the world that we can't always predict or avoid - hurricanes, earthquakes, tornadoes, terrorist attacks, " he said.

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