US Secretary of State Hillary Clinton may be in Ireland for very important business, but that didn't stop her from leaving a heartfelt note in the Aras an Uachtarain guestbook.

On the agenda for Secretary Clinton are an OSCE gathering, a joint press conference with Enda Kenny and meeting President Michael D Higgins.

In the guestbook, Clinton wrote "Wonderful to be back and once again celebrating the strong friendship between our countries and people – Hillary Rodham Clinton"