Russian president Vladimir Putin said on Saturday that Moscow would in future look to deploy tactical nuclear weapons in neighbouring Belarus, a staunch ally, escalating a standoff with the West.

The Belarusian foreign ministry justified its decision to cooperate with Russia in a statement on Tuesday, saying Minsk was acting to protect itself from the West.

“Over the last two and a half years, the Republic of Belarus has been subjected to unprecedented political, economic and information pressure from the US, the UK and its Nato allies, as well as the member states of the European Union,” the statement said.

“In view of these circumstances, and the legitimate concerns and risks in the sphere of national security arising from them, Belarus is forced to respond by strengthening its own security and defence capabilities.”

Minsk said the Russian nuclear plans would not contravene international non-proliferation agreements as Belarus itself would not have control over the weapons.