Following the suspension of the United Nations monitoring of Syria, the White House has urged Syria to abide by Kofi Annan's plan and says it is consulting partners on "next steps".
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The prime minister's announcement came as international leaders gather in Paris on the second anniversary of the climate change plan.
Prime Minister Theresa May said in October the Government will shift towards an organ donation system in England which presumes consent.
Gove's comments came as a draft bill enshrining animal sentience into UK law was published.