State Department spokesperson Ned Price says the US is working with the international community to ensure Russia is held accountable for any potential war crimes.

We are not only going to document; we are not only going to support these appropriate international investigations, we’re not only going to support the efforts of individual nation states, but working together with the international community we are determined to hold responsible anyone who may be – may have engaged in such human rights abuses, atrocities, even war crimes. We will do that, again, through any number of fora.

Criminal prosecutions are one possibility. But to every political leader sitting in Moscow to every Russian commander on the ground in Ukraine, to every Russian service member on the ground right now, our message has been clear: If you take part, order, or are party to such crimes, such war crimes, such abuses, such atrocities, we will do everything we can to hold you accountable with every tool at our disposal”, - said Ned Price.