Northern Ireland Deputy First Minister Martin McGuinness has said he will not be intimidated by dissident republican groups who murdered two soldiers and a police officer this month.
He referred to them as 'micro-groups' whose actions he said had only strengthened the resolve of politicians.
Mr McGuinness was speaking in the US where he and Northern Ireland First Minister Peter Robinson are due to hold talks with President Barack Obama.
Nine people are still being questioned in connection with the murders.



















