Germany denounced the parading of European observers held captive by pro-Russian rebels in Ukraine as "revolting", and said Moscow had a duty to press its separatist allies to free the prisoners.
"The public parading of the OSCE observers and Ukrainian security forces as prisoners is revolting and blatantly hurts the dignity of the victims," German Foreign Minister Frank-Walter Steinmeier said in a statement.
More top news
Around 40% of workers admitted to working despite being too sick for the office, a survey has revealed.
High street stores con customers by offering "discounts" which offer little to no savings - and may end up costing more, Which? has claimed.
Britain has claimed victory over Germany in a special football match marking 100 years since the near-legendary WWI Christmas truce match.