in the interest of (something)
In order to accomplish, improve, or advance something. In the interest of time, let's skip the usual formalities and get right down to the purpose of today's meeting. In the interest of public safety, schools and businesses will be closed for the duration of the storm.
in the interest of someone or something
as an advantage or benefit to someone or something; in order to advance or improve someone or something. In the interest of health, people are asked not to smoke. The police imprisoned the suspects in the interest of the safety of the public.
in the interest(s) of something
in order to help or achieve something: In the interests of safety, smoking is forbidden.