General Hale did indeed have secrets connected to the Kree, but Salomon did not know the specifics, nor did he have any clues suitable for divination. He had not tried to read the secrets in General Hale's mind, not only because Hale's will was exceptionally strong—far beyond that scattered fellow Tony Stark—but also because she had buried her secrets deeply. Unless he cast spells face-to-face over a long period to search for them, all he could find were fragments of her daily life.
Ruby's involvement therefore only provided a possibility of uncovering those secrets. Salomon did not expect Ruby to truly discover anything; the main reconnaissance work was still left to the assassins. Stephanie had become the person in charge of the overall plan. General Hale was merely the first part of it. Before going to war with the Inhumans, Stephanie had to complete the entire operation to eliminate the alien spies the Kree had left on Earth—the other part of the plan was hunting down the remnants of the Afterlife Inhumans. More precisely, it meant Jiaying's trusted followers who knew the Inhumans' true origins and about Attilan on the Dark Side of the Moon, especially an eyeless Inhuman with teleportation abilities. That man knew most of Jiaying's secrets. Find him, kill him, then find the others. Before attacking Attilan, remove every pair of eyes the lunar Inhumans—and even the Kree—still had on Earth.
He was not a genetic purist. He merely despised aliens who acted with impunity on Earth, and he despised even more the fools who helped aliens destroy their own species. For now, the Material Plane of Earth still had Asgard, but after Ragnarok, Earth would have no one to rely on but itself. Salomon formally signed the order that represented the future blood, tears, and oppression