Complex sentence: In 1988, he was invited by new editor in chief Mathias Döpfner to be Die Welt correspondent for London, a position he still holds, and is also a regular panelist on BBC News' weekly foreign corespondent programme Dateline London.
Split into simpler sentences: In 1988, he was invited by new editor-in-chief Mathias Döpfner to be "Die Welt's" correspondent in London, a position he still holds. He is a regular panelist on BBC News' weekly foreign corespondent programme Dateline London.