David Cameron has vowed to fight on in his attempts to stop Jean-Claude Juncker becoming president of the European Commission.
Despite almost all European leaders now backing the Luxembourg PM, Mr Cameron said he was sticking by his plan to force a vote on the appointment.
ITV News Political Correspondent Libby Weiner reports as Number 10 prepares for a fight it looks unlikely to win.
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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.