No matter whether it was Lu Yuanming or the Unified Human Government, from the beginning, there was never any intention to exterminate the entire Silver Civilization. Therefore, as Lu Yuanming signed the document with this intent, the oath with these eleven Silver Civilizations was considered signed. The moment he signed, Lu Yuanming immediately understood the oath; he and human civilization were now unable to commit racial extinction against these eleven Silver Civilizations. As long as they remained in the status of war prisoners, deliberate extermination under any circumstances or reasons was strictly forbidden, or else all of humanity would drop dead instantly.
Of course, if these eleven alien civilizations were to riot, rebel, transform into monsters, or threaten human safety in any way, then extermination was permissible; that would not be covered under the terms of the oath.