White is in a precarious position. He can probably draw by setting up a fortress, but one little mistake and the rook or the knight may get picked off by the queen, which would lead to loss. However, there is a way he can force the draw in three moves. See if you can find it.
From Horwitz and Kling: 1.Rf8+ Qxf8 2.Nf7+ Kg8 3.Nh6+ gxh6 Stalemate!