RIYADH, Saudi Arabia (AP) — Worried about Moscow’s intentions, President Barack Obama urged Russian President Vladimir Putin to pull his troops back from the border with Ukraine during an hourlong phone call Friday. The Russian leader, who initiated the call, asserted that Ukraine’s government is allowing extremists to intimidate civilians with impunity.

The White House and the Kremlin offered starkly different summaries of the call, which occurred while Obama was traveling in Saudi Arabia. The contrasting interpretations underscored the chasm between how Moscow and Washington perceive the escalating international standoff sparked by Russia’s annexation of Crimea away from Ukraine.