The US president will spend the day watching the Irish Open after saying he would love to see a united Ireland. "Months of preparation, millions of euros spent and one of the biggest security operations the State has ever dealt with came down to this" Key points and original sources are listed below.

• The US president will spend the day watching the Irish Open after saying he would love to see a united Ireland.S1

• "Months of preparation, millions of euros spent and one of the biggest security operations the State has ever dealt with came down to this"S2