Arnold Hires Attorney, Hammers Out Divorce Deets

Arnold Schwarzenegger withdrew from a big gun for his divorce battle with Maria Shriver inevitable ... officially hired attorney Bob Kaufman - who has already tackling some difficult questions of the division.

Kaufman has been in contact with counsel for Maria, Laura Wasser - and we are told they are "moving forward" with negotiations for divorce.

Kaufman and Wasser went head-to-head with other celebrities high level divides - and two specialists in the value of something Arnold and Maria at the moment ... keep divorce settlements Hush Hush