Dear Konuk,
As far as the Turkish International Procedure Code is concerned if you have a joint place of residence(for example both you live in the USA) the law of the relevant State ought to be applied for the divorce proceedings;In default thereof, the Turkish Civil code and its pertinent provisions governing the said proceedings should be under consideration.
Assuming that the latter case is at hand and regarding your first question: To sue your wife for divorce under Turkish law, you have to apply for the Court(Asliye Hukuk Mahkemesi-Court of First Instance) which has the right jurisdictive competence for your suit.
As to the merits of the divorce, there has been laid an exhaustive list of grounds down by the Civil Code.Those are specifically characterized ones as -desertion,insanity,crime or such conduct,adultery,attempts on life,ill behaviours.The general ground for divorce is the "rupture of conjugal relations which makes relationship intolerable for the spouses".However, the claimant should have less culpability to rely on the (last) general ground, on the contrary, the defendant may advance a corresponding objection to deny the suit, yet this may be dismissed by the court when it forms an abuse of right. In any case you'd better commission an eligible Turkish attorney to perform these actions.
Whatever happens if your wife oppose? Mainly,that is irrevelant for your claim to be rejected, excepting you'd be deprived of one opportunity of mutual agreement on divorce, the rest of the grounds of divorce may justify your demand indeed the relevant stipulations of which were duely existed and the Judge were convinced so.
As I said so a lawyer should prove to be vital to represent your rights suitably before the Court.

Bülent