Oil prices fell on Monday to the lowest levels since early March following the announcement of a preliminary agreement between the U.S. and Iran to end the war that has strained the energy market. West Texas Intermediate (WTI) crude oil prices were down over 5% during Monday's trading session on the news, trading just above $80 a barrel. Despite that decline, prices for the U.S. oil benchmark remain well above their pre-war levels, as oil prices were between $60 and $70 a barrel in the month leading up to t ...