Kastovia (Cyrillic: Кастовия) is a fictional country featured in Call of Duty: Modern Warfare.
Kastovia is a former Soviet republic that was known as the Kastovian Soviet Socialist Republic (Russian: Кастовская Советская Социалистическая Республика) and became independent after the dissolution of the Soviet Union. After the Cold War, the West and Russia worked together to rebuild one of its major cities, Verdansk.
On October 24th, 2019, CIA Officer "Alex" and several US Marines were deployed in Verdansk to confirm the presence of chlorine gas inside a depot and prevent the forces of Russian general Roman Barkov from sending the gas to Urzikstan. The gas, however, was stolen during the mission by a group of insurgents led by Hadir Karim.
On March 3rd, 2020, the terrorist organization Al-Qatala, under the leadership of Khaled Al-Asad, and heavily supplied by Victor Zakhaev, invaded Kastovia and launched a full-scale assault against Verdansk, occupying the city and its surroundings. A new alliance, Armistice, was formed to stop Al-Qatala.
Sometime after Armistice was formed, a massive cloud of toxic gas was released within Verdansk. In the chaos that ensued, members of Armistice began fighting amongst themselves. Lt. Simon Riley of the SAS was stationed in Verdansk, and began an investigation of the situation, requesting fellow Task Force 141 member John Price to send fighters that he could trust to assist him.