For at least the last several years, the UN has increasingly delegated to the European Union and to NATO when it comes to those types of activities. If you look at the peacekeeping activities that the UN is currently doing, we're into about a dozen remaining peacekeeping activities. Some of them, of course, are quite dated, from the Cold War.
There are calls in terms of the blue helmets in Ukraine. That is also a fundamental misunderstanding about Russia's role in the UN, and how it and China would work together to block any sort of UN action, so I'm on the skeptic side.