The following bids, mergers, acquisitions and disposals involving European, U.S. and Asian companies were reported by 1330 GMT on Tuesday. (For Reuters columns on deals, click on ) ** BP's planned $18 billion tie-up with Russia's Rosneft was looking even more uncertain after chief backer Igor Sechin stood down as Rosneft chairman, and sources said BP faced a new legal challenge. To read more, double-click on
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