SpaceX Founder and CEO Elon Musk stated on Wednesday that the U.S. government and President Donald Trump are responsible for any restrictions on Ukraine's military-grade Starlink networks.

Elon Musk posted on X, stating: "The Starshield system is owned and controlled by the U.S. government. Any speed or usage restrictions are determined by the U.S. military, and ultimately by the President of the United States."

Ukraine previously accused SpaceX of imposing new restrictions on the internet services of Starshield without prior warning, which led to disruptions in Ukraine's military operations at a time when Russia launched another attack on Ukraine's energy infrastructure.

On Wednesday, Serhii Besskrestnov, the defense technology advisor to Ukrainian President Volodymyr Zelensky, stated that SpaceX imposed speed restrictions on moving Starlink terminals without notifying the Ukrainian defense forces.

He said that this caused interference with some tasks, and the same restrictions also apply to Starshield. He stated in Telegram: "Obviously, this action cannot be a coincidence; it is related to the current political situation."

Musk stated that Starshield is a military-grade satellite network, while Starlink is only used for “civilian or defensive activities.”

Some restrictions seem to have been partially lifted. Ukraine's former Defense Minister Mykhailo Fedorov thanked Elon Musk on Thursday morning, stating that the Starlink connections, which allow speeds of up to 160 kilometers per hour, have been restored.

Fedorov added, "Now, completely lifting the speed restrictions on Starshield is of vital importance for Ukraine's defense."

As these developments take place, tensions between Kiev and Washington are escalating, sparked by U.S. President Donald Trump's announcement of a so-called "energy ceasefire" between Ukraine and Russia.

Ukraine welcomes this agreement, but on the condition that Moscow fulfills its commitments; the Russian side, however, indicates that negotiations are still ongoing and has not confirmed whether an agreement has been reached. On Monday, Zelenskyy accused Russia of violating the ceasefire.

While Trump continues to attack Russian energy facilities in Ukraine, he also criticizes Ukraine, claiming that the attacks in Kiev are responsible for the rise in diesel prices, rather than the war between the United States and Iran.

Reuters reported on Wednesday that Washington has threatened to cut off intelligence sharing with Kiev; while Ukrainian officials stated the day before that they had not received any warnings of Russian attacks on Ukraine in the past two days.

CNBC's Elsa Olhen has contributed to this report.