The Golden Question of Pentecost

In Acts chapter one, verse four, we read, and being assembled together with them commanded them that they should not depart from Jerusalem. They say, will thou at this time restore again the kingdom of Israel? And so he doesn't answer their question. Their question is, are you going to come and build the kingdom? Are we going to have a king on a throne, a unified Israel? Is this going to happen? It's a natural question because he had been talking about the kingdom all through the gospels.