I expect they will try but I do not see how they can. Is just one country invading another country, this was the norm for most of human history. There is nothing particular about Russia vs Ukraine that they can add that would stand out in a medieval setting.

It's cringe to do it, but not too difficult. There are two separate tribes of orcs, one led by the thing in the OP (call it the Urukine tribe or something, though that may be too obvious even for Hollywood), and one led by an angry male orc. The heroes will have several fights with the Urukine, including the alluded to scene above where they are either narrowly defeated and driven off (but the noble Urukine spare them for some reason), or just narrowly win (but many of the Urukine in the fight can safely retreat). A few episodes later, the second orc tribe attacks the Urukine to force them to join their evil war machine which is rampaging across Middle Earth, and the Urukine ask the heroes for help, as the Urukine have been demonstrated to be honorable and somewhat noble while the second tribe is just a bunch of murderhobos.