/start bad pun
As I said, all eyes were on Ireland, and the Irish eyes are smiling...
/end bad pun
Difficult to assign weakness in the Euro/dollar specifically to Irelands's "NO" to the Lisbon treaty referendum, but it is all the same undeniable that the Euro area is likely doomed for the long run. Portugal, Spain, Italy, Greece have made that a certainty. Uniting a disparate group of historically unfriendly (or at the very least "competitive") nations in close proximity to one another in the era of financial weaponization and conflict will prove too much for a centralized group of elitists in Brussels.
European Realpolitik is still alive and kicking.