endeavoured to reconcile the Portuguese Government to our refusal, by showing that the demand was one which went directly to the infraction of that principle of non-interference in the internal affairs of other States, which we professed for ourselves, and which it was obviously the interest of Portugal to see respected and maintained. Our obligations had been contracted with the old Portuguese monarchy. Our treaty bound us to consult the external safety of Portugal; and not to examine, to challenge, or to champion its internal institutions. If we examined their new institutions for the sake of deriving from them new motives for fulfilling our old engagements, with what propriety could we prohibit other Powers from examining them for the purpose of drawing any other conclusion? It was enough to say that such internal changes no way affected our engagements with Portugal; that we felt ourselves as much bound to defend her, under her altered constitution, as under the ancient monarchy, with which our alliance had been contracted. More than this we could not say; and more than this it was not her interest to require.
And what is the obligation of this alliance? To defend Portugal—to assist her, if necessary, with all our forces, in case of an unprovoked attack upon her territory. This, however, does not give to Portugal any right to call on us, if she were attacked in consequence of her voluntarily declaring war against another Power. By engaging in the cause of Spain, without any direct provocation from France, she would unquestionably lose all claim upon our assistance. The rendering that assistance would then become a question of
