The procedures for an international lawsuit filed before an international court are divided into original procedures and incidental procedures. Intervention is one of the most important incidental procedures known within the framework of both domestic and international law. It is known as a license granted to a third party to intervene in a previously established lawsuit. It is an incidental procedure that one of the countries resorts to. Which finds that there is an international lawsuit being considered before one of the existing international courts that affects its legal interest، and it may agree with the interests of one of the parties to the lawsuit or may differ from both of them، so the state intervenes to protect its right to confront them، and whoever submits a request for intervention is required to indicate the interest that It is believed that it will be compromised if the case is ruled in addition to stating the legal basis for the court’s jurisdiction، which، whenever it approves the intervention request، the ruling issued from will be an argument against the intervening party، which can present all its defenses and carry out all the procedures granted to the parties to the case until its conclusion.
Shatha abode abass albazy (Sat,) studied this question.