quote [ Martin McGuinness was the IRA leader who became a peace negotiator - a committed Irish republican who ended up shaking hands with the Queen.

His life followed an extraordinary trajectory between violence and politics, moving from being a senior commander in the IRA to helping broker talks that eventually led to the peace negotiations of the 1990s.

Eventually, he became Northern Ireland's deputy first minister, forging an unlikely alliance with Ian Paisley, the DUP leader who was the fiercest - and loudest - critic of the republican movement. ]