Are the problems of checks between Britain and Northern Ireland insurmountable?

The UK government has unilaterally extended another of the Irish Sea border grace periods — this time for parcels.

It comes a day after the UK extended grace periods for checks on agri-foods, a move the EU said was illegal.

Maroš Šefčovič has said that “infringement proceedings” are being prepared.

What happens next?

Are the problems of checks between Britain and Northern Ireland insurmountable? And might the new US administration step in?

Newsnight’s Political Editor, Nick Watt, reports. Kirsty Wark is joined by one of the architects of the Good Friday Agreement, Jonathan Powell, DUP MP Carla Lockhart and Democratic congressman Brendan Boyle.

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