Arnold Schwarzenegger is pulling out a big gun for his inevitable divorce battle with Maria Shriver ... officially hiring attorney Bob Kaufman -- who's already tackling some touchy issues of the split.
Sources tell TMZ ... Kaufman's already been in touch with Maria's attorney, Laura Wasser -- and we're told they are "moving forward" with divorce negotiations.
Kaufman and Wasser have gone head-to-head on other high profile celebrity splits -- and both specialize in something Arnold and Maria value right now ... keeping divorce settlements hush hush.
Arnold Hires Attorney, Hammers Out Divorce Deets
6/1/2011 4:00 AM PDT BY TMZ STAFF
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