Images of debris from Russian strikes on Ukraine strongly indicate that Moscow has used a cruise missile whose development led U.S. President Donald Trump to quit a landmark nuclear pact in his first term, two experts said, confirming earlier reporting.

The specialists based their analysis on images of fragments of the nuclear-capable missile provided by three Ukrainian law enforcement sources, the first visual evidence published to date corroborating Russia¡¯s use of the weapon.

Its deployment dozens of times in Ukraine is a striking example of how the nuclear arms control edifice emerging from the Cold War has crumbled in recent years. This month saw the expiry of New START, the nuclear treaty that imposed limits on U.S. and Russian strategic weapons.