By Ellen Chang Crude oil prices declined on August 4 to their lowest prices since before Ukraine was invaded by Russia as the futures market indicated a possible recession that could dampen demand from consumers. The U.S. oil benchmark WTI fell below $90 a barrel for the first time since the invasion began in February to $88 while Brent crude fell to $95 a barrel as RBOB, the futures market for gasoline, declined to $0.05. The outlook for crude oil prices is difficult to predict, although the spread between WTI and Brent may widen further until there is some sort of resolution of the Russia-Uk…