The assault failed to collapse Ukraine's power grid, but destroyed critical facilities in multiple cities. The long-awaited passage of a security assistance package worth $61 billion in the U.S. Congress means that Ukraine's defense capacities will soon get a significant boost. The ISW said that while Ukraine waits for new weapons to arrive, Russian forces will continue their assault in order to "maximize damage to Ukrainian infrastructure and defense industrial base capacity."According to the ISW, Russia may also change tactics, turning its attention from energy infrastructure to transportation networks in order to prevent the weapons supplies from reaching the front lines. "Russian forces may shift their target set to hit Ukrainian transportation infrastructure, logistics, and military storage facilities," analysts said. The ISW based its prediction in part on remarks by Russian Defense Minister Sergei Shoigu, who announced at the Russian Defense Ministry collegium on April 23 that Moscow will escalate attacks against Ukrainian logistics centers and weapons storage facilities.