Martin McGuinness announces retirement from frontline politics

Sinn Fein's Martin McGuinness has announced he will retire from frontline politics as he focuses on recovering from a "very serious medical condition". Mr McGuinness resigned as Northern Ireland's deputy first minister just last week amid a political crisis over a botched renewable energy scheme. At the time he said his health was not a factor - but his Sinn Fein colleague Gerry Adams admitted he was "not well".