Extra funds mean majors can now in theory increase exploration without cutting shareholder returns

Exit represents a rejection of the production-control system dominated in recent years by Saudi Arabia

Founder of Citadel says some investors may not have realised they cannot quickly withdraw all their money from funds

Also in today’s newsletter: Bank of Japan holds rates and raises inflation forecast, and the Taliban accuse Pakistan of strikes on an Afghan university

Why the markets rise despite chaos

Serviceman accused of making more than $400,000 from trading on classified information