In Focus - Armed Violence Monitors provide information on the specific types of firearm incidents and the related topics to illustrate the magnitude of firearms' adverse impact on civilians. This issue focuses on weapons seizures in South East Europe (SEE) from 1 January to 31 December 2021, including a comparative overview to 2020. Throughout the years, weapon seizures continue to be the most frequently reported type of incident, showing a proactive law enforcement response to combating the use, proliferation and trafficking of firearms, ammunition and explosives (FAE). In this report, weapons seizures refer to all cases in which law enforcement agencies took hold of FAE for numerous reasons, including illegal possession, lack of proof of ownership, voluntary surrender, or as crime scene evidence.