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.
Kyiv can end martial law if war ends by August, official says

Ukraine's parliament, the Verkhovna Rada, could legally suspend martial law if the war with Russia ends by August 2025, Defense Committee Secretary Roman Kostenko said in an interview with New Voice (NV).
President Volodymyr Zelensky first declared martial law and general mobilization on Feb. 24, 2022, when Russia launched its full-scale invasion of Ukraine. The measure has been repeatedly extended since then.
"Regarding martial law, from a legal point of view. The Verkhovna Rada, as it adopted it, can cancel it, even if there are some decisions that require it," Kostenko said.
"I'm not saying that it will. But if we look at it from a legal point of view, if (martial law) is in place by August, it does not mean that it will be in place by August, if the war ends. It can always be canceled — also by a decision of the president and approval of the Verkhovna Rada."
Kostenko's comments come as the United States escalates pressure on Russia and Ukraine to agree on a ceasefire, with U.S. President Donald Trump threatening to "take a pass" on further peace negotiations if either side continues to resist a deal.
Kostenko said that despite Washington's efforts to broker a ceasefire, he does not expect the Trump administration to successfully negotiate a resolution.
"It certainly does not look like the end of the war," he said.
The Verkhovna Rada on April 16 approved the extension of martial law and mobilization for another 90 days, until August 6.
Under martial law, Ukrainian men aged between 18 and 60, with some exceptions, are not allowed to leave the country as they may be called up for military service. Martial law also prevents Ukraine from holding regular parliamentary and presidential elections.
Russian President Vladimir Putin has sought to leverage Kyiv's delayed elections to portray Zelensky as "illegitimate" — a claim that has found traction with members of the Trump administration.
Trump in February denounced Zelensky as a "dictator without elections," echoing the Kremlin's propaganda narrative. Several weeks later he walked back on the statement, criticizing Putin for continuing to attack Zelensky's credibility.

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