How a fully-fledged war between two ex-Soviet states could threaten stability in Central Asia

"While the leaders of more than 20 major Asian countries – – held talks in the ancient city of
Samarkand only a few hundred kilometers away, large-scale hostilities erupted on the border between Tajikistan and Kyrgyzstan, last week. As their presidents also participated in the Shanghai Cooperation Organization (SCO) summit, the conflict erupted with the use of heavy weapons and claimed hundreds of lives. 

It all began on Wednesday, when the Kyrgyz border service discovered their Tajik counterparts had taken up combat positions on part of the state border, thus nullifying previously reached agreements. In response to the demand to leave the territory, they opened fire. Fighting with the use of heavy weapons continued for several days." RT