Bill Clinton: McGuinness believed in a shared future

In a heartfelt tribute, Mr Clinton said the late Sinn Fein chief's legacy should be an example for others to live by.

"When he decided to fight for peace, Martin was calm, courageous, and direct. And when he gave his word, that was as good as gold," he said.

He also said Mr McGuinness' integrity and willingness to engage in principled compromise were invaluable in reaching the Good Friday Agreement.

"In the years that followed, he played an even more important role in ensuring that the peace would last - personally overseeing the arms decommissioning, joining the new government as the first education minister, and later serving as deputy first minister, and doing it all with a sense of humour and fairness that inspired both his friends and former foes," President Clinton said.

"My lasting memory of him will be the pride he took in his efforts to improve disadvantaged schools in unionist and protestant communities.

"He believed in a shared future, and refused to live in the past, a lesson all of us who remain should learn and live by. May he rest in peace."