Lobbying
The pattern of paid agents working a foreign court to derail a project they oppose at home appears in the early Persian period, when the people around Jerusalem set out to stop the rebuilding of the temple by working the policy machinery of the empire.
Hired Counselors Against the Rebuilding
When the returned exiles refuse the offered partnership, their neighbors switch to political obstruction. The harassment is direct on the ground and indirect at the imperial level: "Then the people of the land weakened the hands of the people of Judah, and troubled them in building, and hired counselors against them, to frustrate their purpose, all the days of Cyrus king of Persia, even until the reign of Darius king of Persia" (Ezra 4:4-5).
The hired counselors are the long-term work — paid intermediaries placed inside the Persian administration whose assignment is to "frustrate the purpose" of Judah's project. The opposition is bought rather than waged. It runs across multiple reigns, from Cyrus through Darius, sustained by funding and continuity in the king's councils, not by any one direct confrontation.