Not original author, but I'd rephrase it like this: "I will keep this [stored/saved/bookmarked] so that I can post it as counterargument under any comment clai

Not original author, but I'd rephrase it like this: "I will keep this [stored/saved/bookmarked] so that I can post it as counterargument under any comment claiming that 'Russiagate' didn't actually happen." As to the efficacy of this counterargument, see the sibling comments of yours.