Halliburton leaps into bidding for U.K. oilfield-services firm Expro International Group, and it is not messing around: Its multibillion-dollar offer handily bests the one already on the table from a private-equity-led consortium, but it looks like it’s going to take a lot more than a little extra cash to make Expro skip to its loo. Here’s why the target is expressing some doubts over whether Hally’s bid really amounts to a “firm intention.”

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