Oil price inflates , bet on stimulus plan

Oil is up almost a third in six weeks at a time when the world economy, and hence fuel demand, are extremely weak. Why does this happen? 
http://www.reuters.com/article/2012/08/14/us-oil-rally-idUSBRE87D09Z20120814

U.S. pressuring euro crisis action

According to Reuters, The United States raised pressure on euro zone leaders to take decisive action to solve the region's debt crisis, notably by lowering troubled members' borrowing costs, on the eve of a crucial European Central Bank meeting.

http://www.reuters.com/article/2012/08/01/us-eurozone-idUSBRE8700AZ20120801

BoE Rates Decision

ECB Rates Decision

Rates Unchanged for BoE and ECB

Rates Unchanged for BoE and ECB

Rates decision for BoE n ECB

EUR/GBP in play

Euro-Zone Finance Minister and Major Currencies move

GBP/USD USD/JPY USD/CAD EUR/USD