Moroni has shifted from the coming forth of the Book of Mormon to the final gathering to which it is to be a precursor. Therefore, Moroni turns to events of the last days. These should not be read as happening in the time that the Book of Mormon was published, but rather as events that signal the great ending game that will include the gathering of all Israel.
Moroni declares that those times will come, and before they do, there will be problems in the world.