opponents are concerned that "opponents of the ctbt are most concerned about one issue: in the absence of nuclear testing, u.s. nuclear weapons can be neither as safe nor as reliable as they should be. … while the treaty will constrain the united states from modernizing and developing weapons, it will be possible for other nations to cheat with little or no risk of being caught because the ctbt cannot be verified...the ims of the ctbt is expected to provide the ability