Despite heavy Israeli bombardment of Hezbollah's weapons stores in southern Lebanon, the barrages of cartouches show no sign of ending.

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But he barrages his 2.8 million Twitter followers, which amount to about twice as many as Brazilian President Dilma Rousseff, a less active tweeter.

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The BBC's Jonathan Head, who had just returned from Laiza, says hundreds of Burmese troops have been involved in the attacks, backed by heavy artillery barrages.

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For months then prime minister Ehud Olmert sat on his hands as southern Israel was pummeled with unprovoked barrages of thousands of missiles and rockets from Gaza.

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Seeing his carefully nurtured negotiations melt into the hell of rocket and artillery barrages, then-U.S. Secretary of State Warren Christopher flew to Damascus to mediate a ceasefire.

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Despite his faith in the idea of barrages, Dr Yates, who carried out the research with colleagues at the University of Liverpool, says he is against building one across the Severn.

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The Wildlife Trusts expressed concern that schemes where shortlisted at an early stage in the feasibility study, warning that it favoured proven technology - barrages - which would be highly damaging environmentally.

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"From tidal barrages you can reasonably expect you can get 15% of UK electricity needs, that's a very solid number, " co-author Dr Nicholas Yates from the National Oceanography Centre told BBC News.

BBC: UK tidal power has huge potential, say scientists