The new American Secretary of State John Kerry has arrived in the UK for his first official overseas visit.
He will visit nine nations over the course of an 11-day trip on which he is expected to focus on the conflicts in Syria, Mali and Afghanistan.
More top news
Tory Eurosceptic Jacob Rees-Mogg played down the significance of the deal struck by the Government to win over pro-EU rebels.
The Tanaiste issued the warning to the UK ahead of a visit to Dublin by European Commission President Jean-Claude Juncker.
Around 9,500 people gathered at the neolithic World Heritage Site to attend the overnight celebration of the longest day of the year.