In OTL Southern Ireland's formal neutrality was a demonstration of independence as much as anything else. In practice in many ways, notably allowing Irish citizens to joing the UK military, Ireland's neutrality was very pro ally.
However certain potentially useful bases for the battle of the Atlantic were denied to Britain.
Now De Valera is on record as sympathising with the UK as against the Nazis (though some of his colleagues were actually the opposite)
Suppose in 1941 something happens to shock his conscience. He will have been deeply opposed to "euthinasia" the term used for the murder of disabled people.
It would have been easy enough to come up with a basis for war. Southern Ireland said that all Ireland was the National Territory. The Nazis repeatedly bombed Belfast.
If De Valerea had declared war how much does it in fact help the UK?
What, if any, difference does it make to relations between the parts of Ireland.
However certain potentially useful bases for the battle of the Atlantic were denied to Britain.
Now De Valera is on record as sympathising with the UK as against the Nazis (though some of his colleagues were actually the opposite)
Suppose in 1941 something happens to shock his conscience. He will have been deeply opposed to "euthinasia" the term used for the murder of disabled people.
It would have been easy enough to come up with a basis for war. Southern Ireland said that all Ireland was the National Territory. The Nazis repeatedly bombed Belfast.
If De Valerea had declared war how much does it in fact help the UK?
What, if any, difference does it make to relations between the parts of Ireland.