The violence which broke out outside an accommodation centre for international protection applicants in Dublin last night was orchestrated and preplanned online, the garda officer in charge of the policing operation has said.

US President Donald Trump said he had shelved plans for a summit in Budapest with Russia's Vladimir Putin on the Ukraine war because he did not want a "wasted" meeting.

Ireland has officially joined the European Organisation for Nuclear Research as an associate member state.

The issues raised in last night's Prime Time 70-minute debate are in many ways the themes of the entire Presidential Election campaign, as Catherine Connolly and Heather Humphreys were quizzed on a number of topics.

Russian missile and drone attacks on Ukraine killed six people, including two children, and forced power outages nationwide, officials said.