BRUSSELS (Reuters)- The supertanker damaged by an explosion off the coast of Yemen was handed back to its owner CMB, despite a call by Yemeni government to pay millions of dollars for environmental damages, CMB said. Belgian shipping group CMB , which owns the French-flagged Limburg supertanker through its French Euronav unit, refused to pay Yemen $18.5 million in damages caused by oil that spilled out of the tanker's punctured hull in exchange for the release of its vessel. "It has been solved via a donation to the Yemeni population," Peter Raes, a CMB managing director, told Reuters, adding that...