(Bloomberg) -- Saudi Arabia will make an additional voluntary cut of 1 million barrels of oil a day as part of a deal struck by OPEC+ after hours of tense haggling.Most Read from BloombergOPEC+ Latest: Saudis Unveil Extra 1 Million Barrel CutMystery Trader’s Debt-Ceiling Windfall Sparks Insider ConcernsQatar Airways Plans for Future Without First Class on Long-HaulAmazon Is in Talks to Offer Free Mobile Service to US Prime MembersUS-China Handshake Fails to Stem Asia’s Fear of Another UkraineSau