Public Relations

How does international corporate communications differ from other types of communication such as advertising, national corporate communication, consumer PR?

what is the benefit of public relation?
(Indonesian : Apa keuntumgam dari ‘public relations’?)

what is the benefit of public relation?
(Indonesian : Apa keuntumgam dari ‘public relations’?)

To be more specific. I want to start a media company whose initial focus would be to bring attention to the numerous government technologies I have invested in. Many will change the world. I have invested in 70 different companies so far and want to profile them in either a newsletter or book. I do not know if I can get around things with just a disclaimer, but I have seen many holding companies send out newswires stating their financial interest in the companies profiled. Additionally, should I start a series LLC and put my stock portfolio under one series and the media/PR company under another? What is the legality of trading on swings generated by your own campaign?