Hungary is beefing up security at its energy sites as Prime Minister Viktor Orbán accuses Ukraine of threatening his country's energy supply. Orbán — a vocal ally of U.S. President Donald Trump — published a scathing open letter to Ukrainian President Volodymyr Zelenskyy in which he accused Kyiv of pursing an "anti-Hungarian policy."

"In recent days, you have blocked the Friendship oil pipeline, which is critical to Hungary’s energy supply," Orbán's open letter, which he published on X, read. "Your actions are against Hungary’s interests and endanger the secure and affordable energy supply of Hungarian families. I therefore call on you to change your anti-Hungarian policy!"

On Wednesday, Orbán ordered increased security at critical energy infrastructure sites, The Associated Press reported. The prime minister's order came as Budapest accused Ukraine of blocking the Druzhba pipeline, through which Russian oil is delivered to Hungary, but it crosses Kyiv's territory. Ukrainian officials have denied the allegations, according to the AP, saying that the pipeline was hit in a Russian drone attack.

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In a video posted on social media, Orbán claimed Ukraine was using an "oil blockade" to pressure Hungary and that Hungarian national security services showed Ukraine was "preparing further actions to disrupt the operation of Hungary’s energy system," the AP reported.

"We will deploy soldiers and the necessary equipment to repel attacks near key energy facilities," Orbán said, according to the AP. "The police will patrol with increased forces around designated power plants, distribution stations and control centers."

The accusations lobbed against Ukraine also come as Orbán faces an upcoming election. As the election nears, Hungary has seen billboards across the country showing AI-generated images of Zelenskyy holding out his hand as if asking for money while surrounded by European officials, according to the AP.

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Hungary recently threatened to block a proposed €90 billion European Union loan to Ukraine — worth roughly $106 billion — over the blockade of the Druzhba pipeline.

Hungarian foreign minister Péter Szijjártó said on Friday that "Ukraine is blackmailing" his country and that Kyiv was coordinating with Belgium and the Hungarian opposition to "push fuel prices higher before the elections."

"By blocking oil transit to Hungary through the Druzhba pipeline, Ukraine violates the EU-Ukraine Association Agreement, breaching its commitments to the European Union. We will not give in to this blackmail," Szijjártó added.

Orbán also accused Ukraine, the Hungarian opposition and Belgium of coordinating to exert pressure on Budapest.

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In the letter released Thursday, Orbán, who has a close relationship with the Kremlin, also said that Ukraine had refused "to accept the position of the sovereign Hungarian government and the Hungarian people regarding the Russia–Ukraine war." Additionally, he accused Ukraine of trying to "force Hungary" into the war with Russia.

"We, the Hungarian people, are not responsible for the situation in which Ukraine finds itself. We sympathise with the Ukrainian people, but we do not wish to participate in the war. We do not want to finance the war effort, and we do not want to pay more for energy," Orbán wrote.

The Hungarian prime minister ended his letter with demands that Ukraine reopen the oil pipeline and "refrain from any further attacks on Hungary's energy security," as well as a demand for "more respect for Hungary."

Neither Zelenskyy's office nor the Ukrainian Foreign Ministry immediately responded to Fox News Digital's request for comment.

The Associated Press and Fox News Digital's Ashley Carnahan contributed to this report.

Russia warned Thursday against any "provocative actions" around Cuba after a shootout between the country’s coast guard and a U.S.-registered speedboat that left at least 4 dead. 

The remark comes after Secretary of State Marco Rubio said the U.S. was "going to have our own information" on Wednesday's incident, and that "we'll respond appropriately based on what that information tells us." 

"The situation around Cuba, as we can see, is heating up. The main thing is the humanitarian component. All humanitarian issues concerning Cuban citizens must be resolved, and no one should create obstacles," Kremlin spokesman Dmitry Peskov said Thursday, according to Reuters. 

"As for security around the island, it is, of course, very important that everyone remain restrained and refrain from any provocative actions," he added.

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Cuban officials say five service members approached the Florida-registered speedboat detected within Cuban territorial waters. Occupants then opened fire on Cuban troops, who returned fire, according to the Cuban foreign ministry.  The ministry reported that "four aggressors on the foreign vessel were killed and six were injured." The Cuban vessel’s commander was also injured, according to the ministry.

Cuban officials also claimed the 10 passengers on the Florida-registered boat were armed Cubans living in the U.S. who were trying to infiltrate the island and unleash terrorism. 

Cuba’s government added that the majority of the 10 people on the boat "have a known history of criminal and violent activity," The Associated Press reported. 

According to data retrieved by Fox News Digital, the vessel, registered in Florida with number FL7726SH, is a 24-foot Pro-Line boat.

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"Suffice it to say, it is highly unusual to see shootouts in the open sea like that. It's not something that happens every day. It's something, frankly, that hasn't happened with Cuba in a very long time. But we're going to find out," Rubio said Wednesday. "We're not going to base our conclusions on what they've told us. And I'm very, very confident that we will know the full story of what happened here, and we will know it soon. And then, you know, we'll respond appropriately based on what that information tells us." 

U.S. Attorney Jason Reding Quiñones from the Southern District of Florida also said Wednesday that, "Today's reports indicate that four people aboard a Florida-registered vessel were killed and several others wounded during a deadly gunfire exchange off the coast of Cuba. This is a tragic and deeply concerning event. The Cuban regime asserts their forces were fired upon, but the facts remain unclear and conflicting."

"We are using all available federal tools to understand exactly what happened, who was involved, and whether U.S. citizens or lawful residents were among the casualties. We are committed to a thorough, impartial, and fact-based investigation," he added. 

Fox News Digital’s Rachel Wolf, Emma Bussey and The Associated Press contributed to this report.