KYIV, July 12 - German Chancellor Angela Merkel on Monday vowed to guarantee Ukraine's status as a transit country for Russian gas even after the rival Nord Stream 2 pipeline is completed, Deutsche Welle reported.

President Volodymyr Zelenskiy was meeting with top German officials on Monday in Berlin.

Merkel and Zelenskiy are set to travel to Washington for talks with US President Joe Biden, whose administration is against the almost completed pipeline.

"For us, Ukraine is and will remain a transit country even once Nord Stream 2 is completed," Merkel said at a Berlin press conference alongside Zelenskyy. "There are big worries about this on the Ukrainian side and we take those seriously," she added.

"The European Union and Germany will see to it that this continues in the future beyond 2024," said Merkel.

“We promised Ukraine and will keep our promise. It is my custom to keep my word and I believe this applies to every future chancellor."

Since Russia annexed the Crimean peninsula in 2014, Germany has been extensively involved in dealing with Ukraine. But relations between Ukraine and Germany have soured more recently.

Zelenskiy called for guarantees for Ukraine's future energy supply by addressing the issue through what is known as the Normandy format — talks between Russia, Germany, France and Ukraine to resolve the war in Donbas.

Zelenskiy said the US could also be included in talks in a new format.

Merkel said energy could be addressed if another meeting were held in the Normandy format, although she was reluctant to push the formal framework of the talks beyond their limits.

In addition to discussing German-Ukraine relations, talks covered the implementation of the Minsk agreements.

Signed in February 2015 between France, Germany, Russia and Ukraine, and proto-states the Donetsk and Luhansk People's Republics, this was a package of measures to resolve the conflict in eastern Ukraine.

Germany has insisted that adhering to the 2014 agreement is the way to bring peace to the region.

It is expected to be Merkel's final meeting with Zelenskiy before her retirement, following German national elections in September. (dw/ez)