Looks like the guy is in for up to 7 years for the crime of "offending the head of a foreign state"
Source [News 24 | Shoe-thrower faces up to 7yrs]
Note that it isn't for assault - it's for the insult, which is apparently against the law in Iraq.Baghdad - The Iraqi journalist who became a star in the Arab world when he hurled his shoes at visiting US President George W Bush and called him a dog, appeared before a judge on Wednesday, his brother said.
Durgham al-Zaidi said he and another brother were told by the investigating judge that 29-year-old Muntazar al-Zaidi "had cooperated well," but gave no details.
Under Iraqi law, Zaidi faces up to seven years in jail for "offending the head of a foreign state".