Russia's scramble to find microchips for its weapons hints at struggles the US and China could face in a future war

• Russia has been launching waves of drone and missile attacks against Ukrainian infrastructure.
• To replenish its stocks of missiles and other weapons, Russia has scrambled to find more microchips.
• The hunt for those vital components is a sign of what may await the US and China in a protracted war.

In October, after weeks of successful Ukrainian counterattacks, Russia changed its strategy and began a campaign of long-range airstrikes.

Using waves of exploding drones and salvos of ballistic and cruise missiles, Russia has sought to destroy Ukraine's power grid, overwhelm its military, and terrorize its population.