Vidar Helgesen
He also served as Minister of European Affairs from 2013 to 2015 , and as Minister of Climate and the Environment from 2015 to 2018; having served as Chief of Staff to Prime Minister Erna Solberg from 2013 to 2015 . 
<triplet> Prime Minister <subj> Erna Solberg <obj> officeholder <triplet> Erna Solberg <subj> Prime Minister <obj> position held