• vidhāsyāmaḥ — We will arrange, We will make provision
  Future first-person plural of vi + √dhā — to arrange, ordain. Vidhāna is what Bhagavān does — He arranges. Akrūra is to bring the data; the arrangement remains Kṛṣṇa's. Gauḍīyas read every Pāṇḍava rescue (lākṣāgṛha, vana-vāsa, Kurukṣetra) as the unfolding of this single vidhāsyāmaḥ.
• śam — welfare, benefit, peace
  An ancient Vedic word for well-being — the same śam that appears in the śānti-mantras (oṁ śam no mitraḥ...). Kṛṣṇa's purpose for His friends is named with the most sacred and concise term available.
• suhṛdām — of (Our) dear friends
  Genitive plural of suhṛd — well-wisher, dear friend. The Pāṇḍavas are repeatedly called Kṛṣṇa's suhṛdas. Suhṛd is stronger than mitra: it is a friend whose heart is good toward you without contract, without expectation.
• sādhu asādhu vā — good or evil
  Phrase: sādhu (good, proper) + asādhu (bad) + vā (or). The diagnostic binary — Kṛṣṇa instructs Akrūra to learn which it is. The simplicity of the question masks the gravity of what depends on the answer.

• Where do you skip the investigate-learn-then-arrange order in helping others?
• What current 'helping' could improve with explicit pre-arrangement scouting?

The king does not invade; the king sends a trusted observer first and waits for the report. Kṛṣṇa's foreign policy with Hastināpura is conservative — the bhāra-haraṇa of the earth proceeds through patient reconnaissance, not impulsive force.