US stops sharing nuclear arms data with Russia under START Treaty

The UN logo at the 2022 Review Conference of the Parties to the Treaty on the Non-Proliferation of Nuclear Weapons at the United Nations in New York City on August, 2022 [File: Angela Weiss/AFP]

The United States has told Russia it will cease exchanging detailed data on its nuclear weapons stockpiles, the White House said, calling the move a response to Russia’s suspension of participation in the New START nuclear arms treaty.

While Russian President Vladimir Putin has not formally withdrawn from the treaty, his suspension from participating in it announced in February has endangered the last pillar of US-Russian nuclear arms control.