Uzbekistan's President Shavkat Mirziyoyev meets with his visiting Kazakhstan's counterpart Kassym-Jomart Tokayev in Tashkent, capital of Uzbekistan, on April 15, 2019. The presidents of the two central Asian nations of Uzbekistan and Kazakhstan have agreed in Tashkent on Monday to boost trade and economic cooperation, avoid double taxation, cooperate in air defense, and develop cultural ties. (Xinhua/Cai Guodong)