Why was lisbon a spy capital?

Lisbon became a spy capital during the 20th century due to its strategic location as a neutral ground during World War II, which attracted intelligence operatives from various nations. Its status as a hub for espionage was further enhanced by the presence of diverse international communities and the city's complex political landscape. Additionally, Portugal's colonial ties provided access to vital information and resources, making it an ideal base for covert operations. The combination of these factors fostered a unique environment for espionage activities.