Russian President Vladimir Putin on Monday blasted organisers of a weekend revolt, the gravest threat yet to his power, as traitors who played into the hands of Ukraine’s government and its allies.

Speaking in a stern tone and looking tired in a five-minute TV address near midnight, Putin sought to project stability. He tried to strike a balance between criticising the uprising’s perpetrators to prevent another crisis, and not antagonising the bulk of the mercenaries and their hardline supporters, some of whom are incensed at the Kremlin’s handling of the situation.

Putin, whose troops are stretched thin in the face of a Ukrainian counteroffensive, praised the rank and file mercenaries for not letting the situation descend into “major bloodshed.” And he said the nation had stood united, although there had been localised signs of support for the uprising.

Earlier in the day, the head of the mercenary Wagner Group, Yevgeny Prigozhin, who led the rebellion, defended his short-lived insurrection. He again taunted Russia’s military, but said he hadn’t been seeking to stage a coup against Putin. On Friday, Prigozhin had called for an armed rebellion to oust the military leadership.

Putin’s address was announced by his spokesman in advance and billed by Russian state media as something that would “define the fate of Russia.” In fact, the address didn’t yield groundbreaking developments.

Abbas Gallyamov, a former Kremlin speechwriter turned political analyst, called the address weak. In a Facebook post, he said it was a sign that Putin is “acutely dissatisfied with how he looked in this whole story and is trying to correct the situation.”

The Kremlin later showed Putin meeting with top security, law enforcement and military officials, including Defence Minister Sergei Shoigu, whom the uprising had tried to remove. Putin thanked members of his team for their work over the weekend, implying support for the embattled Shoigu. Earlier, the authorities released a video of Shoigu reviewing troops in Ukraine.

Putin, who declined to name Prigozhin, said mutiny organizers had tried to force the group’s soldiers “to shoot their own.”

He said “Russia’s enemies” had hoped the mutiny would divide and weaken Russia, “but they miscalculated.”

Western officials have been muted in their public comments on the mutiny, and President Joe Biden said Monday that the US and NATO were not involved. Speaking at the White House, Biden said he was cautious about speaking publicly because he wanted to give “Putin no excuse to blame this on the West and blame this on NATO.”

“We made clear that we were not involved, we had nothing to do with it,” he said.

Prigozhin said he had been acting to prevent the destruction of Wagner, his private military company. “We started our march because of an injustice,” he said in an 11-minute statement Monday, giving no details about where he was or what his plans were.

The injustice apparently was a government order requiring Wagner soldiers, if they want to remain fighting, to sign contracts with the Defence Ministry by July 1, which might effectively disband the group despite its battlefield successes in Ukraine. Prigozhin also accused Russia’s military of attacking his troops, prompting his march.

The feud between the Wagner Group leader and military brass has festered throughout the war, erupting into mutiny when mercenaries left Ukraine to seize a military headquarters in the southern Russia city of Rostov. They rolled seemingly unopposed for hundreds of miles toward Moscow before turning around after less than 24 hours on Saturday.

• An AP report