(Reuters) -United States Steel Corp on Sunday launched a formal review of its strategic options, after rebuffing a takeover offer from rival steelmaker Cleveland-Cliffs Inc. FILE PHOTO: Steel workers at U.S. Steel Granite City Works in Granite City, Illinois, U.S., May 24, 2018. REUTERS/Lawrence Bryant/File PhotoThe unsolicited cash-and-stock offer from Ohio-based Cliffs values U.S. Steel at about $7.3 billion, representing a 43% premium to its closing price on Friday. Cliffs said its offer to acquire U.S. Steel had received the support of the United Steelworkers union, which is North America’s largest steel industry union. In a separate statement later Sunday, U.S. Steel confirmed it received an offer from Cliffs and other interested parties.

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Persons: rebuffing, steelmaker, Lawrence Bryant, ”, Lourenco Goncalves, Davis Polk, Milbank, Lipton, Katz Organizations: Reuters, United States Steel Corp, Sunday, Cliffs, U.S . Steel, U.S . Steel Granite City, REUTERS, Steel, U.S, China . U.S . Steel, AK Steel Holding Corp, United Steelworkers, Company, UBS, Wardwell, . Steel, Barclays Capital, Goldman Sachs Group, Milbank LLP, Wachtell, Rosen Locations: steelmaker Cleveland, U.S . Steel Granite, Granite City , Illinois, U.S, Ohio, China . U.S, steelmaker, North, Wells Fargo, J.P.Morgan, Cleveland