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Irish unity cannot just be an 'aspiration' - Varadkar

Leo Varadkar to stand down at next Irish election

Simon Harris pledges to guard Good Friday Agreement. Video, 00:00:41Simon Harris pledges to guard Good Friday Agreement

Leo Varadkar officially resigns as taoiseach

North-South meeting productive - O'Neill

Simon Coveney stepping down from Irish cabinet

Irish PM Leo Varadkar attends final Cabinet meeting

Harris meets Varadkar to discuss transition plans

Simon Harris takes big step towards taoiseach role

Simon Harris - a man in a hurry to the top

Harris set to become new Fine Gael leader later

Varadkar denies resignation conspiracy theories

Harris says he is ready to 'step up and serve'

Leo Varadkar: Key moments for Brexit taoiseach

I am no longer best man to be Irish PM - Varadkar

The GP who became Ireland's youngest taoiseach

The taoiseach who was a unionist bogeyman

Irish PM fights back tears announcing his resignation. Video, 00:01:40Irish PM fights back tears announcing his resignation

'Great' to have NI government again - Biden

US committed to NI peace and progress - Biden. Video, 00:01:06US committed to NI peace and progress - Biden

Stormont return 'positive step forward' - Biden

Irish PM pushes Biden for immediate Gaza ceasefire

New era for NI with new leaders at helm - O'Neill