Germany's Steinmeier - questions still to resolve ahead of Ukraine summit

BERLIN (Reuters) - Germany's foreign minister said on Tuesday talks to plan a Ukrainian crisis summit in Minsk had been useful so far, but open questions remained, and he urged Moscow and Kiev to seize the chance the summit offered.

Leaders of Ukraine, Russia, Germany and France are due to meet in the Belarusian capital Minsk on Wednesday, to discuss how to put an end to the fighting.