4/2011 Russian Resistance to SpaceX Dragon Docking
“We will not issue docking permission unless the necessary level of reliability and safety is proven,” said Alexei Krasov, head of the human spaceflight department of Roscosmos. “So far we have no proof that those spacecraft duly comply with the accepted norms of spaceflight safety.”
http://news.discovery.com/space/russian-resistance-to-spacex-dragon-docking-110427.html
Of course, it was Russia who stood to gain by blocking SpaceX.
Safety? That's odd, as they seemed to have little regard for safety prior to this.