दुर्गापाश्रयो वा द्वैधीभूतस्तिष्ठेत् ॥ कZ_०७.२.१७ ॥
durgāpāśrayo vā dvaidhībhūtas tiṣṭhet
Or, taking refuge in a fort, he should hold position while pursuing a dual course (double policy).
Maintaining two tracks—outward accommodation and inward preparation—so the state can shift quickly as the balance of power changes.