Yeah, and yet again people think the problem is with the strong and powerful that develop this stuff instead of the weak and foolishly "peaceful". Imagine if every country had nukes and ICBMs, total peace. With robots like these (and other weapons) there might be initial carnage if you have the wrong leaders anywhere but then a natural equilibrum will soon be established that will allow for a very long lasting peace fueled by deterrence. Either you get slaughtered by bots so you don't fight or you both rely on bots so less people die and surrender happens sooner when one side's bots get decimated.
Either way, shit is going down. I assure you, china and others are building similar robots, building them is not a choice unless not defending yourself in your opinion is a choice. And like nukes, without a power equilibrum, one side dominates and the wrong side will use it for conquering. The way you make sure this stuff doesn't get abused is by getting the right people in office.