Showdown looming on Brexit deal as new British PM Johnson wants to renegotiate

LONDON -- On his first full day in office, British Prime Minister Boris Johnson urged the European Union on Thursday to rethink its refusal to renegotiate the Brexit deal, setting himself on a twin-track collision course -- with the bloc and his own lawmakers -- over his vow to leave the EU by Oct. 31.

Johnson pledged to deliver Brexit and a "broader and bolder future," as he addressed a rowdy session of Parliament.

He was heckled loudly by an opposition determined to thwart him, with Labour Party leader Jeremy Corbyn dismissing Johnson's "arm-waving bluster." The EU's Brexit chief called Johnson's speech "combative" and his demands unacceptable.

Johnson, who took office Wednesday after winning a Conservative Party leadership contest, has less than 100 days to make good on his promise to deliver Brexit by Oct. 31. And Thursday's session of Parliament was the last before a six-week summer break.

Rejecting the Brexit withdrawal agreement negotiated by his predecessor Theresa May, Johnson insisted, while he wanted a deal, it could only happen if the EU budged, especially on an insurance policy for the Irish border that has been rejected by U.K. lawmakers.

"I hope that the EU will be equally ready and that they will rethink their current refusal to make any changes to the Withdrawal Agreement," he told Parliament during the 2 1/2-hour session. "If they do not, we will, of course, have to leave -- the U.K. -- without an agreement."

Johnson later spoke by phone to European Commission President Jean-Claude Juncker, who once again repeated the bloc's insistence it will not renegotiate the agreement on departure terms it struck with May.

Juncker told Johnson "the withdrawal agreement is the best and only agreement possible" but the EU was ready "to analyze any ideas put forward by the United Kingdom, providing they are compatible with the withdrawal agreement."