Again, this is a conflict that is happening on the border of NATO. We're a member of NATO. NATO allies are extremely concerned about the implications of failure to support or defend Ukraine in this context. There are potentially downstream implications, again, not only for Russia and what Russia might want to do vis-à-vis NATO in the future. Should it win in Ukraine, I think it will feel emboldened.
Also, it's about what other adversaries are seeing in terms of the response from the west. Think of China, for example. Think of Iran and think of South Korea in terms of how they would see a western response to Ukraine that is insufficient.