U.S. President Donald Trump on Friday said that was Russia was not cooperating on North Korea, during a press conference in Washington.

Speaking outside the White House, Trump said that Moscow was “very important” to denuclearizing the DPRK, though was being less helpful than Beijing.

“China is helping. Russia is not helping,” Trump told reporters.

“We would like to have Russia’s help, very important,” he continued.

The remarks followed a phone call on Thursday between Trump and Russian leader Vladimir Putin, with North Korea as the main topic of the discussion.

“The primary point was to talk about North Korea,