He also said that the recently announced break-up of the UK Border Agency, which will once again be placed under direct ministerial control at the Home Office, was a good start but must not be simply "a re-branding exercise or a short-term fix to try to contain the campaigning zeal of UKIP", he said.

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It commemorates the day in 1919 when the UK gave up control of Afghanistan's foreign relations following a short border war.

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