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Peter and Sam with all the day's news. David Cameron says the whole world needs to send a message to Moscow that it's continued military activities in Crimea will have "costs and consequences". Also, a neighbour of Oscar Pistorius tells a court in Pretoria how she heard "terrible screams" coming from his house on the night he shot his girlfriend dead; and a witness in Australia describes an epic fight to the death between a snake and a crocodile.