Irish backstop can't be changed for Brexit deal

There can be no changes to the Irish "backstop", an arrangement to avoid a hard border between European Union member Ireland and British-ruled Northern Ireland after Brexit, Estonian President Kersti Kaljulaid told Reuters.

Many British lawmakers, especially in Prime Minister Theresa May's governing Conservative Party, fear the backstop will trap the UK in a permanent customs union with the EU after Brexit.

They are withholding support for the Brexit deal negotiated between May and the EU, raising the prospect Britain will leave the bloc on March 29 without an orderly transition arrangement in place - something that could disrupt trade and other ties.

Ireland and the rest of the EU say there is no credible alternative to the backstop, which would prevent customs and other checks having to be conducted after Brexit on the border between the Irish republic and Northern Ireland.