The hard-line views expressed by the Iranian president at the UN General Assembly on Tuesday are informed by a Messianic religious belief.
He also singles out Iran's pursuit of a nuclear program as endangering international security.
Ministers of the Organization of Petroleum Exporting Countries meet Tuesday in Vienna and may unofficially ease back on production levels that are above OPEC quotas.
Signals from both Tehran and Washington are often misinterpreted and the subject of attack on the domestic stages in both countries.
Readers write about the Russo-Georgian conflict.
This week's offensive is the latest setback to plans for the Nabucco pipeline, designed to wean Europe off Russian energy giant Gazprom.
Tehran dismisses latest UN offer on nuclear program, prolonging the debate over more sanctions.