Russia has a question for the European countries that have shunned its energy exports: Do you miss us now? The Kremlin is enjoying a sudden resurgence of its importance as a global supplier of oil and gas, as the conflict in Iran disrupts energy production and shipment across the Middle East and sends global energy prices soaring. “Now other markets are opening up, and perhaps it’s more advantageous for us to stop supplying the European market right now,” Mr. Putin said on Wednesday to a state television reporter, Pavel Zarubin, who chronicles the Russian leader. “We are seeing an increase...