Iliescu said Romania fully supported Croatia's European Union integration process.
The two officials also talked about intensifying economic cooperation.
Regional cooperation is an important condition Croatia has to meet in its EU integration process.
On Friday Sanader is due to sign a charter on good neighbourly relations, stability and cooperation in Southeast Europe, whereby Croatia will become a full member of the South-East Europe Cooperation Process (SEECP), the purpose of which is to enable the region's countries to integrate into Euro-Atlantic structures.