(Reuters) -Iranian investment banker Ramin Rabii says he shouted in joy when he learned that Tehran and world powers had reached a deal which promises to lift economic sanctions onIran. Then he called colleagues to discuss the business implications. Rabii, managing director of Turquoise Partners, a Tehran-based investment firm with about $200 million ...

[caption id="attachment_134196" align="alignright" width="177"] A view of a petrochemical complex in Assaluyeh on Iran's Persian Gulf coast.[/caption] Falling oil prices don't endanger Iran's budget for now, but crude's plunge could weaken the country's position in ongoing nuclear talks. Iran and other oil producers lobbied top OPEC producerSaudi ...