"The west" in that headline is a very general synecdoche. The article makes it clearer: "US and British leaders", surrounded by much text.
IMO that by diffusing the blame onto a wishy washy "the west", the article helps avoid any learning.
IMO also: Learning does happen elsewhere. I am familiar with the internal politics of two other countries. The US will find it more difficult to persuade both of those to join its next sally, whenever and wherever that will be.