Stephen Crabb will take over from Iain Duncan Smith at the Department for Work and Pensions, David Cameron has announced.
Crabb, the MP for Preseli Pembrokeshire and former Welsh Secretary, was appointed in the wake of Duncan Smith's surprise resignation over proposed cuts to disability benefits, which sparked an emergency reshuffle of the cabinet.
Glamorgan MP Alun Cairns has been selected as the new Welsh Secretary, while Aberconwy MP Guto Bebb has been appointed as Parliamentary Under Secretary of State at the Wales Office and a Government Whip.
Stephen Crabb has been appointed Secretary of State at the Department for Work and Pensions.
Alun Cairns has been appointed Secretary of State for Wales.
Guto Bebb has been appointed Parliamentary Under Secretary of State at the Wales Office and a Government Whip.
Iain Duncan Smith tells ITV News' Robert Peston his resignation was intended to push the government into pursuing a fairer welfare policy.
Former Work and Pensions Security accuses government of making 'arbitrary cuts' which he says damages the party and the country.
Conservatives fractures show with claim and counter-claim by ministers from within the DWP about the conduct of Iain Duncan Smith.