Kyiv (Ukraine) (AFP) – Russia has declared victory in its months-long operation to capture the strategic port of Mariupol after Ukraine ordered the last of its troops holed up in the city’s Azovstal steelworks to lay down their arms. Moscow’s flattening of Mariupol has drawn multiple accusations of war crimes, including over a deadly attack on a maternity ward, and Ukraine has begun a legal reckoning for captured Russian troops. The first post-invasion trial of a Russian soldier for war crimes neared its climax in Kyiv on Friday, after 21-year-old sergeant Vadim Shishimarin admitted to killing…