German President Frank-Walter Steinmeier issued a sharp rebuke of U.S. foreign policy under Donald Trump, urging the world not ​to let the global order ‍disintegrate into a "den of robbers" where the unscrupulous take what they ‌want.

In unusually strong remarks, ‍which appeared to refer to actions such as the ousting of Venezuela's President Nicolas Maduro at the weekend, the former foreign minister said global democracy was being attacked as never before.

Although the German president's role is largely ceremonial, his words carry some weight and he has more freedom ⁠to express views than politicians.

Describing Russia's annexation of Crimea and the full-scale invasion of Ukraine as a watershed, Steinmeier said the U.S. behavior represented a second historic rupture.

"Then there is the breakdown of values by our most important partner, the ‌USA, which helped build this world order," Steinmeier said in remarks at a symposium late ​on Wednesday.