Two of four men arrested on suspicion of spying for Iran released without charge

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• Dubai airport shutdown affects thousands of UK passengers as drone strikes fuel tank

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• Two schools in Cardiff closed after online weapons threats, police say

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• Chelsea given record £10.75m fine and suspended transfer ban over secret payments

  Chelsea have been given a suspended one-year transfer ban, and fined a record £10.75m, after admitting historical breaches of Premier League rules.