ну что ж

Particle

 * 1)  well, well then, right (in the sense of marking a transition to a new thought, action or summary, as if pronounced – in either English or Russian – ending with a falling tone and a subsequent pausa)

Usage notes
One way of understanding the usage of this particle is to replace it with "Well, what else is there to say/do" or "Well, what (else) can I say".