President Obama has said the United States is working closely with its NATO allies to join together with other countries in fighting the so-called Islamic State.
He made the remarks during a meeting at the White House with NATO Secretary-General Jens Stoltenberg.
The president also had strong words about Russia’s involvement in Ukraine.
“We had a chance to discuss the situation in Ukraine and the increasingly aggressive posture that Russia has taken and we affirmed that NATO is the cornerstone, not just of transatlantic security but in many ways is the cornerstone for global security,” Obama said.
“I urge all parties to fully implement the Minsk agreements and for Russia to stop supporting the separatists and to rid its forces of all Eastern Ukraine,” Stoltenberg added.
Western countries and NATO say there’s proof that Russia has been supplying rebels in eastern Ukraine with troops and weapons, despite Moscow’s denials.
The meeting came as Russia began large-scale military exercises in several regions of the country.
Since its annexation of Crimea last year, Moscow has carried out several such operations to test its readiness for combat.
The defence ministry said the drills were to help prepare for a larger scale exercise in September.