northward - Colchis, Armenia, Iberia, and the dwellers on the Caspian Sea.
southward - Judea, Egypt, Ethiopia, Libya; also India, under Darius. He does not say eastward, for the Persians themselves came from the east (Isa 46:11).
did according to his will - (Dan 11:3, Dan 11:16; compare Dan 5:19).