Wars are considered to be dangerous and this is why preventive diplomacy is practised by a majority of states. Prevention diplomacy is commonly thought to be an indirect instrument for avoiding conflict and global disasters. A frequent question is raised in practice: “Is preventive diplomacy effective?”. This question aims to point out its importance and its tactful applicability. Many studies have shown the essence of what prevention diplomacy means. Some of the research considers it to be an “art of conducting relationships for gain without conflict” (Freeman et al., 2022). The purpose of preventive diplomacy is to strengthen the state or the nation. In consequence, if this measure fails, then war may ensue, even though diplomacy is useful even during a war.