There have been some public order disturbances, but on the kind of scale that Britain has endured many times.

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He added that he believed that Saturday's disturbances were "some time in the coming".

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Justice Minister David Ford said some unionist politicians had to share some of the blame for the disturbances.

BBC: Northern Ireland

Defence Minister Henry Rangel Silva said the armed forces had identified some groups planning to cause public disturbances but said violence was "unlikely", the state news agency AVN reported.

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In a week which has seen serious disturbances at Lewes prison and an official report that some young prisoners in Northumberland are having to spend 22 hours a day in their cells, with virtually no access to vocational or skills training, it is timely stuff.

ECONOMIST: Prisons

Buffett has been making some other moves in the insurance business, which has been rocked by the disturbances in the bond market.

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Tension headaches can sometimes be difficult to distinguish from migraines, but unlike some forms of migraine, tension headache usually isn't associated with visual disturbances (blind spots or flashing lights), nausea, vomiting, abdominal pain, weakness or numbness on one side of the body, or slurred speech.

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Some lightly armed army soldiers patrolled the capital, though there were no reports of disturbances, officials said.

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But the drug also leads to a change on electrocardiogram readings that is thought, in some cases, to be a flashing red warning that a drug could cause fatal arrhythmias, or heart rhythm disturbances.

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