Open this photo in gallery: Ukrainian soldiers take part in trench warfare exercises at a British Army military base in Northern England on June 2, 2023.PAUL ELLIS/AFP/Getty Images They say nothing. One by one, seven Ukrainian soldiers look directly into the camera and put a finger to their lips, even as gunfire is audible in the background. The words “plans love silence” appear onscreen at the end of the video, which Ukraine’s deputy minister of defence Hanna Maliar posted Sunday on her social media accounts. The clip ends with an apparent reference to a long-anticipated counteroffensive aimed at liberating the...