The drone strikes on Russian air force bases weaken Moscow’s ability to wage war on its neighbor and undermine its capacity to threaten more distant rivals.

KYIV, Ukraine — The covert operation was described as one for the “history books” by Ukraine’s president. In the span of a few hours on Sunday, nearly a third of Moscow’s strategic bomber fleet was destroyed or damaged with cheaply made drones sneaked into Russian territory, according to Ukrainian officials.

For global militaries and political leadership, the lessons are clear: adapt to new paradigms, invest in counter-drone capabilities, and rethink traditional defense models, writes Major General Dilawar Singh as he explores learnings from Russia-Ukraine conflict.