On Monday, Mr Singh received a letter from President Hollande expressing regret for the incident, reports say.

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Wallace issued a video statement later in the day expressing regret.

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An elaborate plan to patch up the quarrel collapsed when Mr Netanyahu's prideful coalition partners refused to let him go beyond expressing regret and offer a formal apology.

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Kennedy apologized to the airport guard, expressing regret for rudeness.

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Tweets flew expressing regret and offering condolences.

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Bush is standing by his actions, expressing no regret about removing Saddam Hussein from power.

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Mr Woodward's father-in-law, former Tory MP and minister Sir Timothy Sainsbury, issued a statement expressing his regret at the MP's decision to leave the party, but sympathising with his views on Europe.

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