This logic seems a little flimsy. A ship-killer doesn't obsolete ships any more than nuclear weapons have obsoleted armies. In practice these weapons are availa

This logic seems a little flimsy. A ship-killer doesn't obsolete ships any more than nuclear weapons have obsoleted armies. In practice these weapons are available but not deployed, or the enemy being fought doesn't have them. The US is typically deploying military capability to threaten or invade much smaller countries, so advanced countries having things like ship-killers or nukes are less relevant to the continued usefulness of conventional weapons.