-- Dollar sinks as investor sentiment turns positive on recycled news -- Trading volatile ahead of pivotal euro-zone summit -- U.K. retail sales provide additional support for sterling LONDON (Dow Jones)--The dollar fell against a range of currencies in volatile European trading Thursday as jumpy investors did an about-turn and sold the buck, their faith seemingly restored in the ability of euro-zone leaders to solve the region's debt crisis at a pivotal weekend summit, despite an absence of news.

Source