In my opinion, the military authorities have full power, on suspicion, to prevent any person from leaving the Commonwealth if they have any reason at all for suspecting that he is-or for thinking that he may be-intending to communicate with the enemy; see War Precautions Regulations, regulation 24.

I do not think that the fact that a person so detained might subsequently establish his nationality as a subject of an allied power-or prove that there was no ground for the suspicion actually entertained-would cause any complications.

The national safety makes it necessary sometimes, in time of war, to detain on mere suspicion; and the competent authorities must be the judge of whether sufficient ground exists.

[Vol. 14, p. 129]