What is the fine-grained topic of the following text: The KGB reports that as a result of measures conducted in 1981 to combat smuggling and violations of rules on foreign currency transactions among a number of smugglers, foreigners and their criminal connections among Soviet citizens, it has seized, in the lawful manner, a large number of antiques and works of art, presenting, according to experts, historical and artistic value. Only return the topic.
KGB's combat against smuggling and violations of foreign currency transactions in 1981