@Steven1066,
You have some serious issues here. The subject of the first clause is not "The relevant authority in every country", it is "authority". "Relevant" and "in every country" modify the subject. The verb is "inform" or "should inform" depending on how you were taught. "Citizens" is the direct object. You probably need to reconsider what you have here.
In answer to what you asked, "to protect" is a adjectival infinitive since it modifies the noun steps which is the direct object of the verb "takes".