G8 Northern Ireland summit: Syria crisis topping agenda
17 June 2013 Last updated at 22:45 BST
The leaders of the world's eight main industrialised nations have gathered in Northern Ireland for a G8 summit likely to be dominated by the Syrian conflict.
Also on the agenda are talks regarding a landmark trade deal between the EU and the US, but tensions between Russia and the UK and US over how to deal with Syria threaten to overshadow other issues.
Nick Robinson reports.