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The two parties released a joint statement on Friday saying they have "initiated, in a spirit of dialogue and cooperation, a series of discussions relating to the delegated management of protected areas".

A Russian delegate described proceedings as "chaos" as he addressed the plenary Friday after talks had lasted into the early hours.

"Dependency on global fossil fuel markets is this country's energy Achilles heel," Miliband told delegates.

Asked how things were going, one delegate sent back a clip from a famous Egyptian soap opera that showed a hapless boss pointlessly opening and closing the lids and drawers of his desk.

Swinney told delegates his proposals were the most realistic way of pursuing the goal, based on a precedent which brought about the 2014 referendum.