The United Arab Emirates is leaving OPEC to pump more oil on its own terms. The break strips Saudi Arabia of a key partner and adds to growing uncertainty over the cartel's future. Why has the UAE decided to quit OPEC now? OPEC, the global cartel of oil-producing nations, operates a quota system that limits how much oil each member can produce. For years, the United Arab Emirates (UAE) has clashed with Saudi Arabia, OPEC’s most... [5377 chars]