The Doctrine and Covenants, Section 1:35

35 For I am no respecter of persons, and will that all men shall know that the day speedily cometh; the hour is not yet, but is nigh at hand, when peace shall be taken from the earth, and the devil shall have power over his own dominion.

Conference Report, George A. Smith, October 1941

He has told us in great plainness that the world will be in distress, that there will be warfare from one end of the world to the other, that the wicked shall slay the wicked and that peace shall be taken from the earth. And He has said, too, that the only place where there will be safety will be in Zion. Will we make this Zion? Will we keep it to be Zion, because Zion means the pure in heart?

Conference Report, Joseph F. Smith, April 1937

One year after the organization of the Church, peace could not have been taken from the earth, in justice, but the Lord said the time would speedily come. That time has come. Peace has departed from the world. The devil has power today over his own dominion. This is made manifest in the actions of men, in the distress among the nations, in the troubles that we see in all lands, including this land which was dedicated to liberty. There is no peace. Men’s hearts are failing them. Greed has the uppermost place in the hearts of men. Evil is made manifest on every side, and people are combining for their own selfish interests.