ELI5: Explain Like I'm 5

CIA activities in the United States

The CIA, or Central Intelligence Agency, is an agency of the United States government. It's job is to collect information about other countries around the world. In addition, the CIA helps the United States government make decisions about foreign policy and national security. In the United States, the CIA works in secret to try to learn what other countries are doing that might be a threat to the United States. They also work to make sure that other countries don't learn too much about what the United States is doing.