The UK is "plainly losing" the war on drugs - and may even be going backwards, Justice Secretary Kenneth Clarke has said.
But he insisted he was personally opposed to decriminalisation and that the Government had "no intention whatever" of relaxing the law.
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The announcement came a day after a famine was declared in two areas of South Sudan following three years of civil war and severe inflation.
It is unclear what their alleged plans were.
Anti-terror police are currently questioning the men who were arrested at three separate locations in France.