Currency weakens on BOJ governors comments and G-20s lack of opposition to Japanese policies.

Exchange rate hits lowest level since May 2009 on concerns about the Bank of Japans stimulus measures.

Exchange rate hits lowest level since May 2009 on concerns about the Bank of Japans stimulus measures.

Downgrade is a response to Greek bond buyback, rating agency says.

Downgrade is a response to Greek bond buyback, rating agency says.

ECBs efforts to protect euro and Federal Reserves bond buying undermine U.S. currency.

ECBs efforts to protect euro and Federal Reserves bond buying undermine U.S. currency.

Euro trades at four-month high against the dollar on ECB's aggressive tactics.