Revelation 17:14a These shall make war with the Lamb, and the Lamb shall overcome them:

Do they figure, "We killed him once before, we can kill him again"?

Will they be muslim kings?

Is there a singular kingdom that they rule?

Revelation 17:12 And the ten horns which thou sawest are ten kings, which have received no kingdom as yet; but receive power as kings one hour with the beast.

It doesn't say kingdoms (plural), but kingdom (singular), so is the only one kingdom, not ten?