Rencently a breakthrough was made in the context of the **Minimal Model Program** by the work of Birkar-Cascini-Hacon-McKernan. They proved that the canonical ring of a smooth or mildly singular projective algebraic variety is finitely generated.

Since I'm a master student and so I have no a wide view of the subject (I'm not an expert), I would like to know what are the main open problems in this direction (I mean, in the framework of the **Mori Program**). More generally, right now what are the driving forces, the big open questions in birational geometry?

Feel free to close this question, if too generic for the purposes of the site. Thanks in advance.