Russia used its veto power to block a U.S. and Japan-proposed UN Security Council resolution aimed at preventing the weaponization of space.

The resolution sought to prohibit weapons of mass destruction in outer space and establish compliance checks for countries.

The United States has accused Russia of developing space-based nuclear weapons, contradicting Russian President Putin's denials.

An amendment proposed by Russia and China to ban the placement of weapons in space did not pass.

The U.S. contends that the deployment of nuclear weapons in orbit would breach the Outer Space Treaty and endanger satellite services.

The failure of the resolution has escalated tensions between the U.S. and Russia over the militarization of space.

The U.S. Ambassador to the UN expressed disappointment, citing the lost opportunity to mitigate the risks of nuclear activity in space.