Goldman’s Courvalin Says Oil Markets Have ‘No Buffer’ Against High Prices Commodities extended their massive rally as Russia’s invasion of Ukraine continues to roil global markets and fuel fears of supply crunches. Prices from crude and nickel to aluminum and wheat soared, as raw materials stage their most stunning weekly surge since 1974, during the days of the oil crisis. Russia’s growing isolation is choking off a major source of energy, metals, and crops, sparking fears of prolonged shortages and accelerating global inflation. Traders, banks, and shipowners are increasingly avoiding business with Russia because of the difficulty in securing payments, while shipping lines are shunning bookings from the region. Tensions rose early Friday after Russia attacked a Ukrainian nuclear plant, the biggest in Europe, according to Ukrainian officials. As Russian forces occupied the area, Ukraine’s nuclear regulator said its last check before it halted monitoring showed normal radiation levels. […]