Ukrainian anti-government protesters demanded to know what President Viktor Yanukovych had ceded to seal $15 billion of Russian financial aid and a one-third discount on energy imports, Bloomberg reports.

“I know only one place where there’s free cheese -- a mouse trap,” Arseniy Yatsenyuk, head of jailed ex-Prime Minister Yulia Tymoshenko’s party, said yesterday at Independence Square. “We want to hear what he gave in return.” 

As reported, Russia has promised Ukraine $15 billion in loans and cheaper natural gas. 

The deals were announced after a meeting in Moscow between Russian President Vladimir Putin and his Ukrainian counterpart, Viktor Yanukovych on Dec. 17.