Ukrainian authorities say Russia is responsible for an overnight missile and drone attack on Kyiv that killed nine people and injured another 70, including children. 

The Kyiv City Military Administration said on its Telegram channel that Russia struck Kyiv with drones and ballistic missiles. At least 45 drones were detected, the administration said, adding that Ukraine's Air Force would update the figures later.

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The attack, which began around 1:00 a.m., hit at least five neighborhoods in Kyiv. In Sviatoshynkskyi district, a fire broke out in a residential building that was damaged in the attack. More fires were reported in the Shevchenkivsky and Holosiivskyi districts.

At least 42 people were hospitalized, Ukraine's State Emergency Service said. First responders worked into the morning, finding bodies under the rubble. 

The attack came hours after peace negotiations appeared to stall, with President Donald Trump lashing out at Ukrainian President Volodymyr Zelenskyy, saying he was prolonging the "killing field" by pushing back on ceding Crimea to Russia as part of a potential peace plan. Later that day, Trump said "it's been harder" to deal with Zelenskyy than Russia.

Zelenskyy has said multiple times that recognizing occupied territory as Russian is a red line for his country.

President Donald Trump elicited laughter in the Oval Office on Wednesday after asking a wounded veteran about his "Let's Go Brandon" sticker.

While meeting with wounded veterans, the president appeared to notice the sticker, asking: "Who is that picture on there?" 

"That is Joe Biden," the veteran replied. "And it says, ‘Let’s go, Brandon.’" Attendees inside the iconic office erupted with laughter. 

"I'm saying, ‘what was that picture?'" Trump said through laughter. "That's great."

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The "Let's Go Brandon" phrase was coined during a 2021 NASCAR interview when a sports reporter misheard a crowd chant. Following Brandon Brown's victory at the NASCAR Xfinity Series race, a crowd began chanting "F--- Joe Biden" in the background of his interview.

NBC reporter Kelli Stavast apparently misunderstood what people were chanting, claiming they were saying "Let's Go Brandon!"

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The video quickly went mega-viral and people have since used the phrase as a way to rebuke former President Biden. 

Trump's lighthearted Oval Office moment took a heartfelt turn following the sticker exchange. Trump then addressed the group of veterans and their families, many of whom he had previously visited during his first term.

"These are amazing people, great heroes," Trump said.

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One veteran offered his gratitude to the former president: "Mr. President, we just were very happy with the energy that this administration is bringing, and it's an administration that says it does what it promises. We’re behind you. We believe in you. And I think we all love you."

Another veteran added: "Thank you for loving America, sir." 

The event marked the rollout of several new executive orders, including major education initiatives.

Among them: reforms to the accreditation system for higher education, new transparency measures to expose foreign influence at U.S. universities, and a nationwide push to enhance artificial intelligence education for American youth.

Fox News Digital's Bradford Betz contributed to this report.