BERLIN (AP) — The Latest on Brexit discussions (all times local):

9:45 a.m.

France is vowing that the 27 EU nations facing the United Kingdom in Brexit divorce proceedings will remain united at Wednesday's summit, where they need to agree whether to give Prime Minister Theresa May another deadline extension.

French European Affairs Minister Amélie de Montchalin said early Tuesday that the 27 will need commitments from May that the British government will continue to play a constructive role in EU decision-making if a long extension is to be granted.

"We have the question what role Britain wants to play" if a long extension of the deadline is granted, possibly to the end of the year. In Britain, some have threatened that the government should seek to undermine EU policymaking as a way to get more leverage for the U.K.

8:45 a.m.

A senior German official is demanding "substantial steps" forward in Britain's Brexit standoff and insisting any delay must come with strict conditions, as Prime Minister Theresa May prepares to plead for more time in Berlin.

Michael Roth, Germany's deputy foreign minister, said as he arrived at a European Union meeting in Luxembourg Tuesday that "so far absolutely nothing has changed" and "we are in a very, very frustrating situation here."

May has asked for a new delay until June 30. The bloc's leaders are due to meet Wednesday to consider the request. May is visiting Berlin and Paris later Tuesday.

Roth said that "within the European Union, there isn't an endless readiness to keep talking about delays so long as there is no substantial progress on the British side."