Ahmet Necdet Sezer

Following his legal career, Sezer became a candidate for the presidency with the joint support of many political parties in Parliament. Following the 2000 presidential election, he took an ardent secularist approach on issues such as the headscarf, holding the view that secularism in Turkey was under threat. A quarrel between Sezer and Prime Minister Bülent Ecevit in 2001 led to a financial meltdown, attributed to the weakness of the coalition government as well as to the large debt owed to the International Monetary Fund.
The landslide victory of the conservative Islamist Justice and Development Party (AKP) in the 2002 general election led to strong opposition from President Sezer, who vetoed several proposed laws and referred others to the Constitutional Court. These included laws on banking reform and the lifting of the political ban on Recep Tayyip Erdoğan. During receptions at the presidential palace, Sezer refused to allow women wearing the headscarf to attend citing the laws on the separation of religion and state at the time; this resulted in the wives of Abdullah Gül and Erdoğan, Hayrünnisa Gül and Emine Erdoğan respectively, being barred from attendance. Erdoğan later said in public that he had 'suffered a lot' from Sezer. Provided by Wikipedia