BELFAST, NORTHERN IRELAND - SEPTEMBER 14: Northern Ireland Deputy First Minister Martin McGuinness speaks at a press conference at Stormont castle on September 14, 2015 in Belfast, Northern Ireland. The Northern Ireland Executive government is in crisis following the murders of two former IRA members which has led to accusations by Unionists that the IRA are still operating after the Good Friday Agreement. On Thursday DUP leader and Northern Ireland First Minister Peter Robinson stepped down from his role with other DUP ministers following suit amid the turmoil. Prime Minister David Cameron has urged the five main political parties in Northern Ireland to take part in the talks. (Photo by Charles McQuillan/Getty Images)
