Furthermore, given each side’s determination to achieve its goals, there is little chance of a meaningful compromise. The maximalist thinking that now prevails in both Washington and Moscow gives each side even more reason to win on the battlefield so that it can dictate the terms of the eventual peace. In effect, the absence of a possible diplomatic solution provides an added incentive for both sides to climb up the escalation ladder. What lies further up the rungs could be something truly catastrophic: a level of death and destruction exceeding that of World War II.
U.S. President Joe Biden has labelled Russia’s war in Ukraine a “genocide” and accused Russian President Vladimir Putin of being a “war criminal” who should face a “war crimes trial.” Presidential proclamations such as these make it hard to imagine Washington backing down; if Russia prevailed in Ukraine, the United States’ position in the world would suffer a serious blow.
There are three basic routes to escalation inherent in the conduct of war: one or both sides deliberately escalate to win, one or both sides deliberately escalate to prevent defeat, or the fighting escalates not by deliberate choice but inadvertently. Each pathway holds the potential to bring the United States into the fighting or lead Russia to use nuclear weapons, and possibly both.Playing With Fire in Ukraine | Foreign Affairs
Constant escalation is what led the world into WWI and WWII.