Preseli Pembrokeshire MP Stephen Crabb has been appointed Secretary of State of Wales, after David Jones was sacked.
In his new role, Mr Crabb will be in charge of representing Welsh interests at Westminster.
Mr Crabb becomes the 17th Secretary of State for Wales, having previously served as Parliamentary Under Secretary of State for the Wales Office.
Mr Crabb said: “It is a huge privilege to join the Cabinet as Secretary of State for Wales. As a government, we are ambitious for Wales and determined that Wales should be at the forefront of the UK economic recovery.
“I will be working closely with my colleagues in the UK and Welsh governments to see new opportunities created for Wales. People and businesses across Wales want to see the two governments working together effectively and delivering the investment our nation needs. I believe that Wales deserves the best and I look forward to providing a strong voice for Wales around the Cabinet table.
“I will build on the excellent work of my predecessor, David Jones, who achieved so much during his time as Welsh Secretary. He leaves a strong legacy to Wales, not least in breaking new ground in the devolution settlement by devolving tax powers to Wales.
“He also worked hard to secure new investment for the new nuclear power station at Wylfa, the new prison in Wrexham and reopening the Halton Curve line between Liverpool and North Wales.”