Speaking at a Pentagon news conference, Milley said that given the types of forces Russia has arrayed, "all of it packaged together, if that was unleashed on Ukraine, it would be significant, very significant, and it would result in a significant amount of casualties."
He added: "And you can imagine what that might look like in dense urban areas, along roads and so on and so forth. It would be horrific, it would be terrible."
Milley said Russia's deployment was larger than anything in scale and scope since the Cold War era and said the United States strongly recommended that Russia stand down.
