"He told me that if it were in his power the negotiations would start immediately," Seks said, adding that Klaus had described the decision by Brussels to delay the entry talks with Croatia as a mistake.
Seks said that "certain reserves and misunderstandings between Croatia and the Czech Republic have melted away" and that, from what he was told by people he met, in assessing Croatia's cooperation with the Hague war crimes tribunal the Czech Republic would not take into consideration only the assessment of Chief Prosecutor Carla del Ponte, but also a report by the EU task force.
"It seems that the Czech Republic will join the views of Austria, Hungary, Slovakia and other countries," he stressed.
Illustrating the shift in the position of the Czech Republic on Croatia, Seks recalled the meeting of presidents of European parliaments in Budapest last year when Lubomir Zaoralek, the Speaker of the House of Representatives of the Czech Parliament, proposed an amendment under which all countries of the former Yugoslavia should enter the EU together.
The amendment was soon withdrawn, but it caused a lot of surprise, Seks said.
Klaus, who often criticises the EU, presented the Croatian delegation with the pamphlet "Say 'Yes' or 'No' to the European Constitution", for which he wrote the foreword.
Klaus is due to visit Croatia in September at the invitation of Croatian President Stjepan Mesic and in October to attend a summit of the Central European Initiative.
On Tuesday afternoon, Seks is scheduled to meet Foreign Minister Cyril Svoboda and Prime Minister Stanislav Gross.