" Our security concerns oblige us to maintain our nuclear option , " he said , adding that India had exercised restraint in not carrying out any nuclear tests since the country 's lone test blast in 1974 .
<response> " Our security concerns oblige us to maintain our nuclear option , " he said , adding that <location>India</location> had exercised restraint in not carrying out any nuclear tests since the country 's lone test blast in 1974 . </response>