evidence: May 23rd marks the 65th anniversary of the Chinese annexation of Tibet. That was the day the "Seventeen Point Agreement for the Peaceful Liberation of Tibet" was declared in the aftermath of the Chinese invasion of October, 1950. The document was rejected by many Tibetans at the time, and has been controversial ever since. A major rebellion against Chinese rule was crushed in 1959 and subsequently, a government-in-exile headed by the 14th Dalai Lama was established in Dharamsala, India. The struggle for Tibetan independence has continued, including some 138 self-immolations of monks and nuns in protest since 2009. [...] So the Tibetan question remains unsettled. A nation without obvious natural borders presents problems for border delineation. Tibet’s borders have long been problematic, for the Himalayan Mountains are extremely rugged terrain and the Tibetan plateau profoundly isolated. The Sino-Indian War was fought over the boundary of southern Tibet in 1962, highlighting Tibet’s awkward geographical location between much larger states. And the struggles go back even further; Carole McGranahan examines the transformation of Tibet’s frontiers to borders by the British a century ago. McGranahan notes that "state organization has never been consistent over time or place." Tibet happened to be in the way of colonialism, nationalism, and the ultimate resurgence of both China and India. Drawing the boundary of Tibet was, she says, "a problem composed of cultural, historical, and political factors."