ieExplains: What is the G20 and why is Ireland attending?

South African President Cyril Ramaphosa addresses reporters following the opening session of the G20 foreign ministers meeting in Johannesburg, South Africa, on Thursday. Photo: AP/Jerome Delay

You may or may not have noticed that there is a G20 meeting in South Africa this week.

If you haven't or are confused by it all, let The Irish Examiner get you up to speed.