The companies behind six turbines to be built in the Pentland Firth will both be awarded the "first array" of taxpayer money designed to support renewable energy.
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The talks descended into crisis on Friday when Canada's trade minister Chrystia Freeland walked out of meetings.
Police in New York are still investigating what the substance is and whether it could be harmful.
The Sherlock actor made the comment while he received an award for his humanitarian work.