Brexit deal 'best possible' and 'not renegotiable': Macron

French President Emmanuel Macron said Tuesday the Brexit deal is the "best agreement possible and is not renegotiable", as Britain's premier pushed to reopen talks with Brussels.

Macron's comments during a summit in Cyprus came as Prime Minister Theresa May appealed to British lawmakers to give her a mandate to renegotiate, after parliament rejected an accord reached with the European Union.

Macron urged the British government to "promptly" lay out to EU chief negotiator Michel Barnier "the next steps that will prevent an exit without an agreement, which nobody wants but for which we must all prepare ourselves".

With the deadline for Britain's divorce from the bloc just two months away, Brussels has insisted it will not budge on the December deal, which the House of Commons overwhelming rejected on January 15.

May's massive defeat heightened fears that Britain could leave the EU on March 29 with no new arrangements in place, prompting economic chaos on both sides of the English ...