Preah Vihear temple border conflict between Cambodia and Thailand explained

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Cambodia and Thailand will take their centuries-old border dispute back to the International Court of Justice from April 15 to 16, 2013 to ask for a ruling on where the territorial border lies.
At the centre of the dispute between the Southeast Asian countries is an 11th Cenutry Hindu temple, built under the ancient Angkor Empire (now modern day Cambodia).
Both Thailand and Cambodia laid claim to the temple before and then after French colonial rule was imposed on Cambodia, Laos and Vietnam.
In 1962 the International Court of Justice, also known as the World Court, ruled that the temple, known in Cambodia as Preah Vihear, belonged to that country.
In its judgment, the court only specified the ownership of the temple, and neglected to rule on ownership of the surrounding area, which is claimed by both countries.
When the temple was submitted by Cambodia to become a world heritage site in 2008, violent, nationalistic clashes broke out in and around the disputed area between Thai and Khmer military forces.
Brief clashes ensued that year and culminated in deadly clashes in 2011 which killed at least eight people and displaced tens of thousands.
Both countries agreed to demilitarise the disputed area, an undertaking carried out slowly over the following year.
Cambodia submitted a request for the World Court to reinterpret its 1962 decision and rule on ownership of the disputed territory.