UK government confirms how get Covid-free certification as travel "green list" unveiled.
Boris Johnson and Michel Barnier outlined vastly different views on aligning rules, fisheries, financial services and Gibraltar.
The row has flared at a critical point in Brexit talks.
Spain's PM Pedro Sanchez had threatened to vote against the Withdrawal Agreement at a key summit of EU leaders on Sunday.
The people of the Rock have always been proud of their longstanding relationship with Britain. Now, suddenly, it feels like a millstone around their necks
We are committed to helping all our member countries, wherever they are on their democratic journey. In doing so, we aim to justify the sense of hope and optimism which all voters deserve to feel on election day.
Talking to English friends recently, it has become apparent to me that they don't really think that the United Kingdom is in the process of breaking up as a result of Brexit. It will all blow over, they insist, when everyone realises what a great success Brexit is. Things will unfold like England after the Reformation - sure there were difficult times, some beheadings, a few burnings.
Brexit and Gibraltar exposes how an isolationist country will fare outside the EU, and Britain has fallen right down that trapdoor.
It's just all too much
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