# Russia-Belarus military cooperation

> Live situation record from CLSTR: https://clstr.news/situations/russia-belarus-military-cooperation
> Updated: 2026-08-04T16:44:18.000Z. Sources: 9. Developments: 2.

In late July 2026, Russia’s permanent representative to the CSTO declared that Moscow would support Belarus against any border provocations, a pledge made after the two countries completed joint nuclear exercises on Belarusian territory in May. The drills involved thousands of troops and a wide array of weapons, including the deployment of tactical nuclear weapons.

A few days later, in early August, President Vladimir Putin signed amendments to the technical‑military cooperation agreement with Belarus. The changes are intended to speed the delivery of components, spare parts and next‑generation weaponry, reflecting an effort to deepen the strategic alliance forged after Russia’s 2022 invasion of Ukraine. Both developments underscore an escalating integration of Russian and Belarusian defence capabilities, combining political backing with accelerated arms transfers.

## Timeline

### 2026-08-04: Russia modifies military cooperation pact with Belarus to speed arms deliveries

Putin amended the Russia‑Belarus military pact to speed delivery of advanced arms, following joint nuclear drills and deployment of tactical nukes and hypersonic missiles, while Belarus denies plans to join the

7 sources. https://clstr.news/cluster/russia-modifies-military-cooperation-pact-with-belarus-to-speed-arms-deliveries

### 2026-07-31: Russia vows to back Belarus against any border provocations

Russia’s Viktor Fasilyev said Moscow will support Belarus against border provocations, offering aid through the Union State or CSTO. This follows large May drills that rehearsed possible nuclear deployment on B

2 sources. https://clstr.news/cluster/russia-vows-to-back-belarus-against-any-border-provocations

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Cite as: Russia-Belarus military cooperation. CLSTR, https://clstr.news/situations/russia-belarus-military-cooperation