Only to collect information from other soyrces to please the politicians and corrupt officers -this is the meaning of intelligence agency these days-

An intelligence agency is a governmental agency that is devoted to information gathering (known in the context as "intelligence") for purposes of national security and defense. Means of information gathering may include espionage, communication interception, cryptanalysis, cooperation with other institutions, and evaluation of public sources. The assembly and propagation of this information is known as intelligence analysis.

Intelligence agencies can provide the following services for their national governments.

provide analysis in areas relevant to national security;
give early warning of impending crises;
serve national and international crisis management by helping to discern the intentions of current or potential opponents;
inform national defense planning and military operations;
protect secrets, both of their own sources and activities, and those of other state agencies; and
may act covertly to influence the outcome of events in favor of national interests
Intel ...more

An agency where all people who are not intelligent are posted to become intelligent and after some mishap say, they had already warned