Taoiseach Micheál Martin has arrived in Angola to take part in the European Union-African Union summit.
Ahead of the summit, the Taoiseach will attend a meeting of the European Council to discuss Ukraine.
European leaders left the G20 summit in Johannesburg for Luanda, where they will spend the next two days meeting leaders from African nations.
On the agenda will be how Europe and Africa can cooperate better on a range of issues including security, trade, energy and migration.
But first this morning there will be an informal meeting of the European Council to address the latest developments on Ukraine, following talks between US, Ukrainian and European officials in Geneva yesterday.
Earlier, Mr Martin said that Ireland together with the EU had been clear on the principle that international borders cannot be changed by force.
