Lawlight said:
Batman stole the kryptonite so I have no idea how he would have gone after Superman. My understanding is that he was pushing Batman to go against Superman but the kryptonite being stolen was against his plans so he course-corrected by abducting Martha Kent. Then Superman would go against Batman with the idea that the latter has weaponised the kryptonite to kill him. If Batman failed, he had Doomsday as a last resort. |
He already had a small bit of Kryptonite. He wanted the Senator to allow him to import the metorite so he could have a larger portion.