Link: https://eng.belta.by/economics/view/ambassador-belarus-and-kazakhstan-working-on-new-joint-investment-projects-178020-2026/

“We have very robust trade, economic, and investment cooperation. Based on the results of last year, the trade rose by about 30%. Very good indicators. Moreover, we are seeing growth in all areas across the board. This applies to imports to Kazakhstan, exports to Belarus, and trade in services,” the diplomat said.

“We would be happy to see Belarusian business in various sectors of our economy. Including in the processing of agricultural raw materials, their production, in the transport and logistics sector, and in the digital economy. These points were discussed.”

Good start for further investigation, it's criminal how much I have been underlooking Central Asia, but I'm just trying to figure SEA out and we'll get to that.

https://eng.belta.by/president/view/lukashenko-lauds-kazakhstan-referendum-calls-results-remarkable-178018-2026/

https://eng.belta.by/president/view/lukashenko-sees-potential-to-double-trade-with-kazakhstan-178019-2026/

Note that the United States attempted to instigate a civil war in Kazakhstan a few years ago. They didn't get too far with it, but you can still find Human Rights Watch-type articles floating around about it. They intersperse their regular Kim Jong Un and Xi Jinping Dictatorship reporting with Central Asian nations.