[T]he French are on the point of making a great effort in Portugal...which Lord Wellington...will find himself unable to resist. But even if such an … - Charles Grey, 2nd Earl Grey

Wellesley's success...appears to have been nothing more than an affair of a rear-guard, and is ridiculously magnified.

I think I entirely agree with you on the subject of Portugal; all the probabilities were, and in my opinion still are, against eventual success there. I have no faith even in the promised victory... I could not deny that such a success would be worth the sacrifices we had made for it. But a doubtful or indecisive victory, and protracted operations, I should think little less ruinous (I am not sure they would not be more so) than an immediate defeat.

What I most heartily wish for is, a union between the two countries: by a union I mean something more than a mere word—a union, not of parliaments, but of hearts, affections, and interests—a union of vigour, of ardour, of zeal for the general welfare of the British empire. It is this species of union, and this only, that can tend to increase the real strength of the empire, and give it security against any danger. But if any measure with the name only of union be proposed, and the tendency of which would be to disunite us, to create disaffection, distrust, and jealousy, it can only tend to weaken the whole of the British empire. Of this nature do I take the present measure to be. Discontent, distrust, jealousy, suspicion, are the visible fruits of it in Ireland already: if you persist in it, resentment will follow; and although you should be able, which I doubt, to obtain a seeming consent of the parliament of Ireland to the measure, yet the people of that country would wait for an opportunity of recovering their rights, which they will say were taken from them by force.