Prigozhin's uprising failed, but it triggered China's 'psychology about warlords,' top White House official says

• A brief, failed revolt by Russian mercenaries in June raised doubts about Putin's hold on power.
• It also worried officials in China, which has its own history with "warlords," a US official said.
• Experts say Putin's apparent vulnerability may lead China to temper its relations with Russia.

Yevgeny Prigozhin's uprising last month fizzled soon after it started, but it left doubts about Vladimir Putin's hold on power.