London — Members of Britain’s parliament moved to stop the next prime minister forcing the country out of the EU without an agreement. It was a clear warning to Boris Johnson, the favorite to become premier, that he will have a fight on his hands if he tries to deliver a no-deal Brexit.

The pound rose after a mass rebellion from at least 30 Conservative MPs defeated the government and passed measures designed to prevent the next leader closing down parliament to force through a no-deal split against their wishes.

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