Ahead of an infrastructure meeting at the White House on Thursday, Fox News correspondent Jacqui Heinrich questioned President Biden: "Why are you waiting on Putin to make the first move, sir?"
"What a stupid question," Biden responded after lightly giggling.
The President has been known for lashing out at the press when he doesn't enjoy their questions.
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The exchange came as Biden faced widespread denunciation for insisting that U.S. retaliation for Russian aggression in Ukraine would depend on the details.
Throughout his rambling two-hour press conference on Wednesday, Biden announced: "Russia will be held accountable if it invades. And it depends on what it does."
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"It's one thing if it's a minor incursion and then we end up having a fight about what to do and not do, et cetera," he went on. "But if they actually do what they're capable of doing with the forces amassed on the border, it is going to be a disaster for Russia if they further invade Ukraine."
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The President and top Administration officials worked Thursday to clarify his seeming waffling on Russia's aggression.
Biden reiterated that if "any assembled Russian units move across the Ukrainian border, that is an invasion" and it would be met with a "severe and coordinated economic response."
Although, American politicians and world leaders are still finding the "minor incursion" comment disturbing.
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"We want to remind the great powers that there are no minor incursions and small nations. Just as there are no minor casualties and little grief from the loss of loved ones," Ukrainian President Volodymyr Zelenskyy announced in a tweet.
"Deeply troubling and dangerous," echoed Rep. Liz Cheney, a Wyoming Republican.
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"A green light for Putin," announced Republican Rep. Mike Garcia of California, who is one of many to use that phrase.
The President's latest remarks came as US Secretary of State Antony Blinken prepared to meet Friday in Geneva with Foreign Minister Sergey Lavrov in a high-stakes bid to ease tensions that appear likely to fail.
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Biden said the U.S. was preparing for Russia to take action that fell outside the parameters of conventional warfare.
"Russia has a long history of using measures other than overt military action to carry out aggression - paramilitary tactics, so-called gray zone attacks and actions by Russian soldiers not wearing Russian uniforms," he announced.
Russian officials have said they have no intention of invading Ukraine, though the deployment of a large combat force along its borders, estimated at 100,000 troops, has created fear of war.
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