What caused Arlene Foster to step down as DUP leader?

Following calls from within her party for a leadership contest, Arlene Foster says she will step down as DUP leader.

In a statement, Mrs Foster said: 'It is important to give space over the next few weeks for the party officers to make arrangements for the election of a new leader.'

Sky's Ireland Correspondent David Blevins looks at what brought about her departure.

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