U.S. Secretary of State John Kerry has welcomed news of the transference of Iran’s enriched uranium to Russia, describing it as a “significant step” toward the implementation of the nuclear agreement.

John Kerry

John Kerry

Kerry confirmed on December 28 that a ship carrying 11 tons of low-enriched uranium has left Iran for Russia.

“The shipment included the removal of all of Iran’s nuclear material enriched to 20 percent that was not already in the form of fabricated fuel plates for the Tehran Research Reactor,” Kerry said, according to Reuters.

The TASS news agency also confirmed the complete transfer of the enriched uranium from Iran to Russia on Monday.

In accordance with the nuclear deal, Iran has received yellow cake from Russia and Kazakhstan in exchange for the enriched uranium.

Kerry was quoted as saying: “This removal of all this enriched material out of Iran is a significant step toward Iran meeting its commitment to have no more than 300 kilograms of low-enriched uranium.”

According to the nuclear deal reached last summer between Iran and the 5+1, Iran also has to reduce its active centrifuges and redesign the Arak nuclear reactor.