why Is it illegal to be a spy for another country?

Being a spy for Another Country is illegal because it undermines national security and sovereignty. It often involves espionage, which includes gathering sensitive information or technology without authorization, posing a threat to a nation's defense and interests. Such actions can lead to severe penalties, including imprisonment, as they violate laws designed to protect a country from foreign influence and potential harm. Additionally, espionage can breach international treaties and norms, further complicating diplomatic relations.