The following year, bilateral relations between Thailand and Cambodia became strained due to overlapping claims on the land area surrounding Preah Vihear Temple. Sihanouk issued a communiqué in July 2008 emphasising the Khmer architecture of the temple as well as ICJ's 1962 ruling of the temple in favour of Cambodia. In August 2009, Sihanouk stated that he would stop posting messages on his personal website as he was getting old, making it difficult for him to keep up with his personal duties. Between 2009 and 2011, Sihanouk spent most of his time in Beijing for medical care. He made a final public appearance in Phnom Penh on his 89th birthday and 20th anniversary of the Paris Peace Accords on 30 October 2011. Thereafter, Sihanouk expressed his intent to stay in Cambodia indefinitely, but returned to Beijing in January 2012 for further medical treatment at the advice of his Chinese doctors.