Clinton was critical of Russia's plan to start up the nuclear reactor at an Iranian power station was "premature" without further assurances on Tehran's nuclear programme.
Women from across the globe who have shown tremendous courage and leadership in advocating for human rights were honored at the International Women of Courage Awards.
Tymoshenko, a former Prime Minister, is an arch-rival of Yanukovich and she was expected to use the meeting with Clinton to complain about him rolling back the country's democracy process.
Clinton also took time to address the WikiLeaks issue and said he expects people to lose their lives over this week's massive leak of diplomatic documents