The visit marks Merz’s first trip to Ukraine, and the first time all four leaders have travelled there together.
A notice about the airspace closure was published on the U.S. Defense Department's NOTAM (Notice to Airmen) website on May 10, as cited by Ukrainian defense news outlet Militarnyi.
"As in the past, it is now for Russia to show its willingness to achieve peace," the EU's statement reads.
Kremlin spokesperson Dmitry Peskov rejected the idea of a 30-day ceasefire between Russia and Ukraine, claiming in an interview with ABC News on May 10 that it would be "an advantage" for Ukraine.
"Our involvement in the war was justifiable, and this belongs to our sovereign rights," North Korean dictator Kim Jong Un said. "I regard this as part of the sacred mission we must execute for our brothers and comrades-in-arms."
The number includes 1,310 casualties that Russian forces suffered over the past day.
"We have a plan B and a plan C. But our focus is plan A, the essence of which is to get everyone's support" for Ukraine's accession, EU foreign policy chief Kaja Kallas said.
"(T)he presence at the Victory Parade of a country that bombs cities, hospitals, and daycares, and which has caused the deaths and injuries of over a million people over three years, is a shame," Polish Prime Minister Donald Tusk said.
"According to the participants of the performances, their goal is to remind the civilized world of the barbaric actions of Moscow, which for many years and decades has systematically violated international law," a source in Ukraine’s military intelligence agency (HUR) told the Kyiv Independent.
"I have great hope that an agreement for a ceasefire in Ukraine will be reached this weekend," German Chancellor Friedrich Merz said on May 9, shortly before traveling to Kyiv alongside the leaders of France, Poland, and the U.K.
U.K. Prime Minister Keir Starmer, French President Emmanuel Macron, German Chancellor Friedrich Merz, and Polish Prime Minister Donald Tusk will arrive in Kyiv early on May 10.
The United States embassy in Kyiv on May 9 issued a warning that Russia could launch "a potentially significant" attack in the coming days, despite Putin's self-declared Victory Day "truce."
The sanctioned oil tankers have transported over $24 billion in cargo since 2024, according to Downing Street. The U.K. has now sanctioned more shadow fleet vessels than any other country.
Russia offers Elon Musk a nuclear plant for Mars mission

Russia may propose supplying a nuclear power plant for tech billionaire Elon Musk's Mars mission, Kirill Dmitriev, head of the Russian Direct Investment Fund, said on March 27.
"Russia can offer a small-sized nuclear power plant for a mission to Mars and other advanced technological capabilities," he said at the Arctic Forum in Murmansk, in comments reported by Reuters.
Dmitriev, whom the Kremlin appointed for negotiations with the U.S. on the war in Ukraine, claimed Russia's nuclear technology could be useful for space exploration. He praised Musk as a "great visionary" and suggested Russia could contribute to a potential Mars mission.
Dmitriev told Russian media on March 18 that he expects Russia to hold talks with Musk in the near future and that Russia seeks cooperation with Musk's SpaceX company in developing Russia's space agency, Roscosmos, and state-run nuclear energy company Rosatom.
The proposal comes following renewed U.S.-Russia talks initiated by President Donald Trump to improve ties strained by Russia's war in Ukraine.
Moscow and Washington continue to cooperate on space despite the severing of most economic ties after Moscow launched the war against Ukraine.
Musk, the CEO of SpaceX and a close ally of Trump, has previously said human landings on Mars could happen as early as 2029, but that 2031 was more likely.
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