Northern Ireland Protocol
Commission says claims are being lodged due to UK's "unwillingness to engage in meaningful discussion".
Even though Boris Johnson negotiated the protocol, the government is looking to rip it up.
Maros Sefcovic said Boris Johnson and his ministers had set out to "unilaterally break international law".
Foreign secretary says changes would not "make the EU any worse off" — but the proposals have already sparked fears of retaliation.
The foreign secretary produced the bizarre pronunciation of Taoiseach as she called on the EU to renegotiate the Northern Ireland protocol.
European Commission's Mario Sefcovic says any changes to existing Brexit deal would "bring further legal uncertainty" to the people of Northern Ireland.
Letter signed by 52 of the Northern Ireland Assembly's 90 members says it "flies in the face" of the views of most people in the province.
Liz Truss will unveil a bill today to rip up part of the Northern Ireland Protocol in order to restore power-sharing.
MPs say the legislation "is damaging to everything the UK and Conservatives stand for".
"What we're going to do is lawful and it is correct," he said.