"Opening the withdrawal agreement is not on the agenda," said Steffen Seibert, a day after British Prime Minister Theresa May said she would seek to revisit the pact she sealed with the 27 EU leaders at a summit last month.
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British MPs late Tuesday voted through an amendment saying they would only support a divorce deal if a controversial "backstop" clause to keep the Irish border open was removed.
The German government has taken note of the British parliament's decision to seek "more clarity" on the border issue, said Seibert.
"It is now up to PM Theresa May to give concrete explanations on this issue to the EU's Brexit negotiator Michel Barnier and Commission chief Jean-Claude Juncker," added the spokesman.
German Foreign Minister Heiko Maas earlier Wednesday said the Brexit deal sealed by May and the EU is the "best and only solution" for an orderly withdrawal, German foreign minister Heiko Maas said Wednesday, stressing the bloc won't leave Ireland isolated.
"Our position is clear: the withdrawal agreement is the best and only solution for an orderly exit," he told the Funke media group, after British MPs voted for May to renegotiate the deal.