although never officially stated Statement , there is speculation Coming_to_believe that the test intended to determine Deciding the feasibility of using Using nuclear weapons in clearing the jungles of vietnam , at a time of australia 's increasing involvement in the vietnam war starting in 1962 .

The purpose Aiming of `` Wigwam '' was to determine Deciding the vulnerability of submarines to deeply detonated Attack nuclear weapons , and to evaluate the feasibility of using such weapons in a combat situation .

The IRA declared Expressing_publicly a brief ceasefire in 1972 and a more protracted one in 1975 , when there was an internal debate Quarreling over the feasibility of future operations .