Reference of "its"

Does the highlighted "its" refer to "John Walker’s work"?

Context:

John Walker’s work is a postmodern expression of war, with its references to past poetry, art, history, recollection, and commentary, but this usage perhaps dilutes its impact. To be good war art – to say something – and to connect with the viewer, war art has to be more than the sum of its parts, even in a postmodern world.