CIA and DIA are parts of the United States of America security agencies. They are created to ensure the security of citizens and property. As much as both CIA and DIA are federal security agencies, they differ in some ways especially when it comes to their constitutional duties. CIA is the acronym for Central Intelligence Agency. The security agency is saddled with the responsibility of gathering intelligence that gives information relevant to national security.
CIA also collect that information, process it and send the information to the government so that necessary decision and action will be taken on it. DIA, on the other hand, is the acronym for Defense Intelligence Agency, and It is also a federal security agency. As the name implies, it is saddled with the responsibility of gathering intelligence that will be useful in defending the country in its foreign military mission. It gathers information about weapon production and distribution, it also provides useful information about Troops movements, their capabilities, strategies and battlefield intelligence.