Complex sentence: There he initially worked as a correspondent for "Information" but, as the paper had become too left-wing for his liberal views, in 1967 he began to write for "Berlingske Tidende".
Split into simpler sentences: There he initially worked as a correspondent for "information". However, considering the paper to have become too left-wing for his liberal views, in 1967 he began to writing for "Berlingske Tidende".