The BBC's Northern Ireland Political Editor Mark Devenport, himself a Sidney alumnus, has been reflecting on the Queen's visit to Ireland.
Devenport looks to Cromwell, Sidney and the politics of the seventeenth century as a way to understand the significance of the Queen's visit to the Republic.
You can read the article by following the link to the BBC website.
This is an archived news story, first posted in 2011.
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