Complex sentence: However, President Klaus at that time opposed the ratification of the Lisbon Treaty, had called for the process to be brought to an end and had stated that he was in "no hurry" to ratify the document.
Split into simpler sentences: However, President Klaus at that time was opposed to the ratification of the Lisbon Treaty. He called for the process to be brought to an end and stated that he was in "no hurry" to ratify the document.