तेजो हि संधानकारणम् ॥ कZ_०७.३.०८ ॥
tejo hi saṃdhānakāraṇam
Power (tejas) is the real cause that makes alliances/coalitions possible.
Because alliances endure when backed by credible capability—resources, army, resolve—so partners expect protection, gain, or enforcement rather than mere promises.