On Monday, Group of Seven nations imposed a cap on the price of Russian oil. The measure’s debut has been glitchy. The unprecedented move by one set of countries to try to impose a price at which another can sell a commodity has drawn confusion among traders, and — from Moscow — a threat of retaliation. It requires anyone wanting to access key G-7 services including insurance to pay $60 a barrel or lower a barrel for Russian crude. That’s well above where the nation’s main grade currently trades, but far below global benchmark oil prices. As the cap enters its third day, here are the highlights that have emerged ... (full story)