Secret surveillance of other countries' leaders is a very complex and controversial issue. Supporters of this practice may argue that by obtaining intelligence, potential threats, conflicts and terrorist activities can be prevented, thus helping to maintain global stability. Understanding the political dynamics of other countries and the intentions of their leaders may enable countries to be more calm and effective in responding to international crises. However, this practice may also undermine international relations and trust. When a country is found to be secretly monitoring the leaders of other countries, it may trigger diplomatic disputes, damage bilateral relations, and even lead to hostile behavior. In addition, this also involves ethical and legal issues, because surveillance violates the privacy rights of individuals and countries, as well as the principle of respect for sovereignty. Therefore, whether global stability is maintained may depend on the specific circumstances and how the motivations and consequences of surveillance are interpreted. Ultimately, such behavior needs to find a balance between legality, morality and necessity.