Ireland's rejection of the Lisbon Treaty will be top of the agenda today when Foreign Affairs Minister Micheal Martin meets his EU counterparts in Luxembourg.
The talks are expected to focus on how the EU can proceed with some of the planned reforms contained in the treaty.
The Taoiseach, Brian Cowen, will also be in Brussels later this week to outline his views on how the EU should react to the Irish vote.
Yesterday, he said the referendum result had left Ireland and the EU in a dilemma to which there was no quick fix.
He also admitted that the Yes side could have run a more effective campaign in the lead-up to the referendum.
Meanwhile, Sinn Féin is holding a press conference today to outline the issues it says must be addressed in any re-negotiation of the treaty.