John Bolton, Donald Trump’s former national security adviser, slammed the president on Wednesday after he claimed that he had “no favorites” in Russia’s war on Ukraine.

“Well, of course he’s got favorites and his favorite is not Russia, his favorite is Vladimir Putin whom he thinks is his friend,” said Bolton in an interview with CNN’s Kaitlan Collins.

Bolton — a frequent Trump critic since the president pushed him out of his first administration — went after his former boss, who told reporters in the Oval Office that he doesn’t “care” if a ceasefire deal would pressure Kyiv to recognize Russia’s illegal annexation of Crimea in 2014.

“Look, I just want to see the war end. I don’t care,” Trump claimed.

“If they’re both happy, they both signed an agreement, I have no favorites. I don’t want to have any favorites. I want to have a deal done.”

Collins reported that Trump, as his 100th day in office approaches next week, has grown “increasingly frustrated” that a peace agreement between the countries has proven to be “so elusive.”

The president told reporters that the U.S. has to “get a deal” with Ukrainian President Volodymyr Zelenskyy, adding that he thought it’d be “easier” to deal with him but it’s instead “been harder.”

Trump also took to his Truth Social platform on Thursday where he criticized Zelenskyy for being “very harmful” to the peace negotiations due to his pushback toward the U.S. proposal for Kyiv to recognize Russia’s illegal seizure of the Crimean Peninsula.

Bolton noted that Trump has already made “major concessions” to the Russians.

He then pointed to the president’s rejection the U.S. position on Ukraine, both in terms of recognizing its sovereignty and talk of the country becoming a member of NATO.

“This basically lays down central elements of what Russia already wants and that has affected the negotiations which, by the way, have been more about a ceasefire than a permanent peace settlement,” Bolton said.

“A permanent deal is a long way away.”