Kyiv is charging a Russian politician over alleged removal of Ukrainian children to an unknown location.
This marks a "moment of peril" for the world, according to the UN chief.
A Ukrainian has photographed the city over the last few weeks in an attempt to capture alleged war crimes.
More than 6,000 cases of potential war crimes have already been opened, according to Ukraine's prosecutor general.
Lesia Vasylenko has accused Vladimir Putin of genocide, adding: "Russian soldiers loot, rape and kill."
The Russian word for “children” was reportedly painted in huge white letters on the pavement on two sides of the building.
But she'll be tried as a juvenile because she was under 21 when she worked as a secretary at Stutthof, officials said.
President Donald Trump's pardons include military contractors who killed children, law enforcement officers who violated civil rights and, of course, his allies.
Defence Secretary Mark Esper said America would "follow the laws of armed conflict" if tensions with Iran escalate following death of Qassem Soleimani.
From Syria to the Rohingya Muslim crisis, it's been a year defined by conflict.