Oil ends up 3 percent as OPEC meets; volatility hits post-Doha high

By Barani Krishnan and Amanda Cooper NEW YORK/LONDON (Reuters) - Oil settled up 3 percent on Monday as the world's largest producers gathered in Algeria to discuss ways to support prices, with nervous trade driving volatility to its highest since a similar meeting to freeze output in April in Doha which failed. The Organization of the Petroleum Exporting Countries and other oil producers led by Russia are meeting informally on the sidelines of the International Energy Forum in Algeria from Sept.