I think it likely that Asuma will have concerns around what implications this will have on world politics.
Our allies in AMITY and our enemies who have spies within our borders will likely see this. Their reports to their respective masters will not write this off as a seal failure. Anyone with eyes will suspect that Leaf possesses a weapon of mass destruction and that places Asuma in a very awkward position.
I do not believe that Asuma will care about the loss of human life etc. but I expect that he will be upset that this happened and that he will be unmoved by our pleas that this was an unforeseeable consequence. "If there was any chance of an outcome on a scale visible to everyone from Leaf to Rock", he will say, "I should have been informed so I could make a decision as to whether the test should proceed. You have put me in an awkward position internationally and I am upset."
And he will be correct to say so. We fucked up there. Owning up to it immediately so he can make an informed decision on how to proceed is better than the alternative.