With a view to helping rebuild the war-battered country, Germany is providing guarantees that back the capital of German companies investing in Ukraine. If factories were to be damaged or destroyed in missile attacks, for example, the German state would be liable for those investments.

"I have decided to explain this again in detail today and perhaps ask my colleagues from the other countries to do the same," Habeck, who also serves as vice chancellor, told reporters on the sidelines of the World Economic Forum.

The Green politician described the scheme as a "tremendously successful step", which showed that Germany believed and trusted Ukraine to successfully survive this difficult situation.

Investment guarantees for 14 companies with a total cover volume 280 million euros ($305 million) have been granted so far, according to the website of the Economics Ministry.

Applications of further companies were currently being processed, the website said.

Meetings with Ukrainian President Volodymyr Zelenskiy and members of his cabinet as well as representatives of the business community would take centre stage during his visit to Davos, Habeck said.

Habeck also said he welcomed a global peace summit on Ukraine hosted by Switzerland at the request of Zelenskiy.

"Talking is always good and if Switzerland has created a forum for this, then I can only welcome it."

If Russian President Vladimir Putin were to "successfully conclude the war against Ukraine from his point of view", Ukraine's closest neighbours would be threatened in the coming years, Habeck said.

($1 = 0.9189 euros)

(Reporting by Victoria Waldersee, Writing by Nette Nöstlinger, Editing by Linda Pasquini and Alex Richardson)