Please answer the following question: Information: - Air Chief Marshal G Donald Perera VSV , USP , ndc , psc , SLAF was the Commander of the Sri Lanka Air Force from 2002 to 2006 and Chief of the Defence Staff from 2006 to 2009 . After stepping down as Chief of the Defence Staff , Perera was appointed as Sri Lanka 's Ambassador to Israel in 2009 . - The Sri Lanka Air Force (SLAF) ("Sri Lanka Guwan Hamudawa") is the air arm and the youngest of the Sri Lanka Armed Forces. It was founded in 1951 as the Royal Ceylon Air Force (RCyAF) with the assistance of the Royal Air Force (RAF). The SLAF played a major role throughout the Sri Lankan Civil War. The SLAF operates more than 160 aircraft and has a projected trained strength of 27,400 airmen and 1,300 officers, who are from both regular and reserve service. The Sri Lanka Air Force has expanded to specialise mainly in providing air-support to ground forces, troop landing, and carrying out air strikes on rebel-held areas in the Northern and Eastern theatres, but is also capable of high- and low-level air defence. - The Royal Air Force (RAF) is the United Kingdom's aerial warfare force. Formed towards the end of the First World War on 1 April 1918, it is the oldest independent air force in the world. Following victory over the Central Powers in 1918 the RAF emerged as, at the time, the largest air force in the world. Since its formation, the RAF has taken a significant role in British military history, in particular, playing a large part in the Second World War where it fought its most famous campaign, the Battle of Britain. - The United States Armed Forces are the federal armed forces of the United States. They consist of the Army, Marine Corps, Navy, Air Force, and Coast Guard. The President of the United States is the military's overall head, and helps form military policy with the U.S. Department of Defense (DoD), a federal executive department, acting as the principal organ by which military policy is carried out. From the time of its inception, the military played a decisive role in the history of the United States. A sense of national unity and identity was forged as a result of victory in the First Barbary War and the Second Barbary War. Even so, the Founders were suspicious of a permanent military force. It played an important role in the American Civil War, where leading generals on both sides were picked from members of the United States military. Not until the outbreak of World WarII did a large standing army become officially established. The National Security Act of 1947, adopted following World WarII and during the Cold War's onset, created the modern U.S. military framework; the Act merged previously Cabinet-level Department of War and the Department of the Navy into the National Military Establishment (renamed the Department of Defense in 1949), headed by the Secretary of Defense; and created the Department of the Air Force and National Security Council. - The Sri Lankan Civil War was an armed conflict fought on the island of Sri Lanka. Beginning on 23 July 1983, there was an intermittent insurgency against the government by the Liberation Tigers of Tamil Eelam (the LTTE, also known as the Tamil Tigers), which fought to create an independent Tamil state called Tamil Eelam in the north and the east of the island. After a 26-year military campaign, the Sri Lankan military defeated the Tamil Tigers in May 2009, bringing the civil war to an end. - Air chief marshal (Air Chf Mshl or ACM) is a four-star air officer rank which originated in and continues to be used by the Royal Air Force, where it is the most senior peacetime air force rank. The rank is also used by the air forces of many countries that have historical British influence and it is sometimes used as the English translation of an equivalent rank in countries which have a non-English air force-specific rank structure. Air chief marshal is a four-star air officer rank and has a NATO ranking code of OF-9. An air chief marshal is equivalent to an admiral in the Royal Navy or a General in the British Army or the Royal Marines. In other forces, such as the United States Armed Forces and the Canadian Armed Forces, the equivalent four-star rank is General. After reading the paragraphs above, we are interested in knowing the entity with which 'donald perera' exhibits the relationship of 'conflict'. Find the answer from the choices below. Choices: - battle of britain - cold war - first barbary war - second barbary war - sri lankan civil war - world war - world war ii
A:
sri lankan civil war