Topic: Fariborz Ghadar
By 2050, 7 out of 10 people will live in megacities, offering the benefits of concentrated living but also some of the biggest public-works challenges in human history.
Tehran says it needs more time to decide. It may be playing for better terms, but in wavering on the Iran nuclear deal, it could lay the groundwork for sanctions.
This week's offensive is the latest setback to plans for the Nabucco pipeline, designed to wean Europe off Russian energy giant Gazprom.