How has Brexit impacted the UK's relationship with Ireland?

The United Kingdom's decision to leave the European Union, commonly known as Brexit, has had significant impacts on its relationship with Ireland. One of the main issues arising from Brexit has been the border between Northern Ireland, which is part of the UK, and the Republic of Ireland, which is an EU member state. Prior to Brexit, this was an open border with free movement of goods, services, and people.

However, the UK's decision to leave the EU created the need for a customs border between the two countries, which has caused political tensions and economic uncertainty. In order to address this issue, the UK and EU negotiated the Northern Ireland Protocol, which keeps Northern Ireland in the EU's single market for goods and establishes a customs border in the Irish Sea.

This has led to concerns from unionists in Northern Ireland who believe it undermines the UK's sovereignty and threatens its territorial integrity. Additionally, it has created trade barriers between Northern Ireland and Great Britain, which has led to disruptions in supply chains and increased costs for businesses.