Home Secretary Theresa May has told MPs: "We won't be rolling out the ['go home'] vans. They were too much of a blunt instrument."
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Singer posted on Facebook that she had taken an overdose and hidden in a hotel.
After decades of struggling negotiations both activists and delegates are hoping for some form of landmark agreement.
World Rugby chairman Bernard Lapasset led the tributes, calling Lomu 'a giant' of the game.