Wilfried Martens prime minister, described him as a "true statesman and one of the fathers of federal Belgium". Martin Schulz, president of the European Parliament, paid tribute to him as a "statesman of Belgium, Europe and an outstanding leader of European Parliament". Jerzy Buzek, EPP MEP and former prime minister of Poland, described him as "irreplaceable". The EPP think tank Centre for European Studies has been renamed after him, now being the "Wilfried Martens Centre for European Studies", a decision taken during the EPP Congress in Dublin held on 9 March 2014. He received an Official State funeral, which was attended by
Prime minister Bahrain's prime minister, Sheikh Khalifah bin Sulman Al Khalifah has been in the post since 1970, making him the longest serving non-elected prime minister. The post of prime minister may be encountered both in constitutional monarchies (such as Belgium, Denmark, Japan, Luxembourg, the Netherlands, Norway, Malaysia, Morocco, Spain, Sweden, Thailand, Canada, Australia, New Zealand, and the United Kingdom), and in parliamentary republics in which the head of state is an elected official (such as Finland, the Czech Republic, France, Greece, Hungary, India, Indonesia (1945-1959), Ireland, Pakistan, Portugal, Montenegro, Croatia, Bulgaria, Romania, Serbia and Turkey (1923-2018)). See also "First Minister", "Premier",