The seizure of Iraq’s second-largest city by militants from a breakaway al-Qaeda group is hobbling the OPEC producer’s effort to fix its main pipeline for crude exports and boost output at one of its biggest oilfields. Fighting in the northern city of Mosul forced a halt in repairs to the main pipeline from Kirkuk to the Mediterranean port of Ceyhan, Turkey , the state-run North Oil Co. said in a statement yesterday. Shipments through the pipeline, a frequent target of sabotage, have stopped since March 2, leaving Iraq with a single outlet, by tanker via the Persian Gulf , for its most lucrative export. The nation’s semi-autonomous Kurds have yet to find buyers for two cargoes they shipped via Turkey. “The Kirkuk pipeline has been out of action for months, and there’s no chance now of starting it up again,” Robin Mills, who works with Iraq as head of […]