तैर्भूम्येकान्तरा व्याख्याताः ॥ कZ_०७.१८.३० ॥
tair bhūmyekāntarā vyākhyātāḥ
By those (categories), the intervening states/territories (bhūmyekāntara) are explained.
A state/territory situated between two powers whose alignment and control determine access, invasion routes, and buffering—hence it is classified using the same political-role typologies.