KYIV, Ukraine — The suspected Russian missile hit the tall apartment building, engulfing it in flames and smoke. It killed at least four people, including elderly residents, and shattered the lives of a close-knit community. For lawmaker Oleksii Goncharenko, the tragedy was yet another example of potential Russian war crimes. “They are just hitting residential buildings in these areas,” said the Ukrainian parliament member, who arrived at the scene shortly after the explosion two weeks ago. “You can walk around, you will not find any military targets, or any military people. This is just terror.” Yet a few minutes later,...