Brent crude prices fall below $80 per barrel on after Iranian negotiators said progress had been made in peace talks with US Good morning, and welcome to our rolling coverage of business, the financial markets and the world economy. Investors are pegging hopes onto reports of progress in the US-Iran peace talks, helping ease market jitters that have weighed on stock and sent energy prices soaring. The week starts on a surprisingly positive note despite the uncertainty surrounding the US/Iran pea