The leaders of Zimbabwe and Belarus have signed agriculture and defence agreements.
This includes a deal to supply the southern African country with $60m (£49m) worth of tractors.
On a visit to the capital Harare, President Alexander Lukashenko – a key ally of Russia – said relations between the two countries had developed as a result of the western sanctions they are both under.
Mr Lukashenko accused the West of using economic sanctions to suppress both countries.
Zimbabwe has maintained a neutral stance since Russia invaded Ukraine almost a year ago.