What are the possible scenarios following 'Anwar Move'?

Following the shocking announcement by PKR president Anwar Ibrahim that he has secured the support of a substantial majority of MPs in parliament, several scenarios are on the cards.

Even if Anwar's announcement that he has enough support to form the government is true – and that is quite an assumption given the rush by Umno MPs to deny it – this does not necessarily mean that he will become Malaysia’s ninth prime minister...