The Latest: Juncker: EU won't reopen talks on Brexit deal

LONDON (AP) — The Latest on Britain's new government (all times local):

5:35 p.m.

EU Commission chief Jean-Claude Juncker has told Britain's new Prime Minister Boris Johnson that the bloc's member nations will not give in to his demand to renegotiate the Brexit withdrawal treaty.

Juncker called the existing deal "the best and only agreement possible."

Juncker and Johnson had their first phone conversation late Thursday since Johnson took over from Theresa May as Britain's leader.

Johnson has insisted that the current agreement to leave the EU and arrangements regarding the Irish border were not good enough and had to be renegotiated.

An EU official with knowledge of the exchange said that despite Juncker's refusal to reopen the legal 585-page legal agreement, Juncker said he "remains at the disposal of the United Kingdom to add language" to a political text on future relations and "to analyze any ideas put forward by the United Kingdom, providing they are compatible with the withdrawal agreement."

The official spoke on condition of anonymity because of the confidentiality of the phone call.

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3:20 p.m.

European Commission President Jean-Claude Juncker and new British Prime Minister Boris Johnson will have a phone call later Thursday to discuss the prospects of reaching an orderly departure of Britain from the bloc.

EU Commission chief spokesperson Mina Andreeva said the phone call is planned for 5.45 p.m. Brussels time (1645GMT).

Johnson has insisted that he wants to renegotiate the withdrawal deal both sides agreed on under Prime Minister Theresa May. EU leaders have firmly refused to consider the option and said they only want to discuss changing an additional political text outlining future arrangements.

Johnson has said that is not good enough for him, and...