Environmental issues in Kazakhstan at the Semipalatinsk nuclear testing facility (in fact a large zone south of Kourchatov (Курчатов)) and along the Chinese border. The Central Asian Regional Environmental Center is located in Kazakhstan, which fosters regional cooperation on environmental issues. Most of Kazakhstan’s water supply has been polluted by industrial and agricultural runoff and, in some places, radioactivity. The Aral Sea, which is shared with Uzbekistan, has shrunk to three separate bodies of water because of water drawdowns in its tributary rivers. A Soviet-era biological weapons site is a threat because it is located on a former island in the Aral Sea that
Kazakhstan-Turkmenistan border the border in 2000-2001 with an initial delimitation treaty being signed on 5 July 2001. The border was fully demarcated on the ground during the period 2003-2005. In 2013 a new cross-border railway was opened by Presidents Gurbanguly Berdimuhamedow of Turkmenistan and Nursultan Nazarbayev of Kazakhstan. Kazakhstan-Turkmenistan border The Kazakhstan-Turkmenistan border is 413km (257m) in length and runs from the Caspian Sea to the tripoint with Uzbekistan. It is the shortest international boundary of both states. The land border starts at the eastern shore of the Caspian Sea at Cape Sue, just to the north of the Turkmen town of