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Well this bit;s a nonsense
4/5 EU commits to give UK the option to exit the Single Customs Territory unilaterally, while the other elements of the backstop must be maintained to avoid a hard border. UK will not be forced into customs union against its will.
Effectively the EU has devised a new concept of Customs Territory, which If I were other member states I'd be saying "hold on a cotton picking minute, these territories are ours and the customs bit is dependent on us. The other factor is that the EEA appears to have been cherry picked. "The UK will not be forced into a Customs Union against it's will"- "whilst other elements of the Backstop must be maintained to avoid a hard border. " So Ireland actually has no say in it's border with us. Well done Ireland oh well done. Like I say the CTA effectively comes to an end for Ireland.
Correctomundo.... it’s all all the CTA
The CTA is a pretty unique and highly beneficial arrangement for the RoI, but the EU hates it.
Ending the CTA will allow the EU to put its first helot State, the RoI, totally under it’s boot as it creates the United EU Provinces of Ireland