They have the choice to negotiate or not, but if they choose war and lose, then their lot is to reckon with the consequences of their actions. Vae victus, as the Gauls said to the Romans.
You sir, are an asshole. You have no moral high ground here and in the face of starving civilians, your beliefs, attitudes and viewpoint ring of hollow and despicable demagoguery. Your soap box is built of boards of blood and suffering and we can ALL see it, pooling around your feet. You’re waving a sign that says “Good people of Earth, despise me, oppose me, ostracize me and disregard my words.”
It’s not OK. You have picked the wrong point of view and when you open your mouth or reach for your keyboard to dispense it, nothing will wash the resulting stench from you, because you’re standing on top of this and there is NO WAY to make that a good look. No amount of reasonableness, logic or polite discourse will put you on the right side or make you persuasive.
The side you support has already lost the moral debate and now it’s just the practical matter of what can be done about it, given the geopolitical and cultural realities surrounding it. The world will never forgive you for standing where you stand. Someday, you may realize you need to forgive yourself and when that happens, MAYBE we can have a different conversation.