Ukraine's President Petro Poroshenko has said that his country will face a constant military threat for the foreseeable future.
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With temperatures peaking at 29C today, it is the hottest April day for nearly 70 years.
Russian trolls are behind a disinformation campaign about chemical weapons attacks in Syria and Salisbury, a government source has said.
Decontamination work is to begin at nine sites across the city.