Japan's Prime Minister Yukio Hatoyama returns to his seat after speaking at a plenary session at the Upper House in Tokyo February 2, 2010. Hatoyama said on Tuesday that he wanted ruling party kingpin Ichiro Ozawa, whose aides have been arrested in a funding scandal, to stay in his post for a mid-year election. REUTERS/Yuriko Nakao (JAPAN - Tags: POLITICS CRIME LAW)