Iraqi officials have told the Associated Press that a suicide attack targeting police has killed 15 people in the disputed northern city of Kirkuk.
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The Prime Minister will say Moscow's brazen flouting of international law represents a threat to the basis of democracy across Europe.
In some cases, victims of violence and other serious crimes face long delays as forces are unable to dispatch officers promptly.
Mr Corbyn will highlight increases of almost 6% in council tax bills across the country.