Ukraine fired a volley of British Storm Shadow cruise missiles into Russia on Wednesday, the latest new Western weapon it has been permitted to use on Russian targets a day after it fired U.S. ATACMS missiles.

The electronic communications and navigation systems the West depends on are vulnerable to Russian attack.

Summary and Key Points: Railgun technology, first conceptualized in World War I, has been pursued by various nations due to its potential for high-velocity, non-explosive projectiles. However, technical challenges, particularly related to power and durability, have stymied progress. -While the U.S. has recently shelved its railgun projects, China continues to explore this field, recently testing an electromagnetic railgun with artificial...