---

Abstract
On 4 July 2019, Gibraltar seized oil tanker Grace 1. The Gibraltar`s Chief Minister stated that considering the sanctions under European Council Decisions 255 and 36 including prohibition of the sale, supply and export of equipment, goods and technology which might be used for internal repression of the people of Syria and also the restriction on the purchase, import and transfer of the crude oil from Syria which was imposed for the purpose of the reduction of the financial ability of the Syrian government, the main question of the paper is whether the measures taken by the Gibraltar are legally justifiable.