Sheikh Hamad bin Khalifa deposed his father Khalifa in a bloodless coup. An unsuccessful counter-coup was staged in 1996. The emir and his father are now reconciled, although some supporters of the counter-coup remain in prison. The emir announced his intention for Qatar to move toward democracy and permitted more liberal press and municipal elections as a precursor to expected parliamentary elections. A new constitution was approved via public referendum in April 2003 and came into effect in June 2005. Economic, social, and democratic reforms occurred in the proceeding years. In 2003, a woman was appointed to the cabinet as minister of education. Qatar and Bahrain have had disputes over the ownership of Hawar Islands since the mid-20th century. In 2001, the International Court of Justice awarded Bahrain sovereignty over Hawar Islands while allotting Qatar sovereignty over smaller disputed islands and the Zubarah region in mainland Qatar. During the trial, Qatar provided the court with 82 forged documents to substantiate their claims of sovereignty over the territories in question. These claims were withdrawn at a later stage after Bahrain discovered the forgeries. In 2003, Qatar served as the US Central Command headquarters and one of the main launching sites of the invasion of Iraq. In March 2005, a suicide bombing killed a British teacher at the Doha Players Theatre, shocking the country, which had not previously experienced acts of terrorism. The bombing was carried out by Omar Ahmed Abdullah Ali, an Egyptian resident in Qatar who had suspected ties to Al-Qaeda in the Arabian Peninsula. In June 2013, Sheikh Hamad Bin Khalifa stepped down as emir and transferred leadership to his son and heir Sheikh Tamim bin Hamad Al Thani. As a means to manage the revenue gained from LNG sales, the Qatar Investment Authority was established in 2005. In 2008, the government launched Qatar National Vision 2030, which provides a framework for Qatar's long-term development as well as identifying threats and solutions. Arab Spring and military involvements (2010–) Qatar played a role in the revolutionary wave of demonstrations, protests and civil wars in the Arab world collectively known as the Arab Spring. Having shifted from its traditional diplomatic role as a mediator, Qatar moved to support several transitional states and upheavals in the Middle East and North Africa. During the initial months of the Arab Spring, the country's most extensive media network, Al Jazeera, helped mobilize Arab support and