मन्त्रपुरोहितसेनापतियुवराजानामन्यतमकोपोऽभ्यन्तरकोपः ॥ कZ_०९.३.१२ ॥
mantra-purohita-senāpati-yuvarājānām anyatama-kopo ’bhyantara-kopaḥ
Internal hostility means the hostility of any one among the counsellor(s), the royal chaplain, the commander of the army, or the crown prince.
Because defection or resentment at the apex (policy, ritual legitimacy, armed force, succession) can rapidly translate into a coup or paralysis of the state.