The swift Ukrainian incursion into Russia’s Kursk region that began last week has been the largest cross-border raid by Kyiv’s forces in the nearly 2 ½-year war, and has exposed Russia’s vulnerabilities and dealt a painful blow to the Kremlin.

Zelenskyy acknowledges military incursion onto Russian soil, AP explains

The swift Ukrainian incursion into Russia’s Kursk region that began last week has been the largest cross-border raid by Kyiv’s forces in the nearly 2 ½-year war, and has exposed Russia’s vulnerabilities and dealt a painful blow to the Kremlin.