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.
Polish arms plant explosion starts fire, leaves 1 employee dead

An explosion in the Mesko arms factory in the southeastern Polish city of Skarzysko-Kamienna on June 10 started a fire and killed a 59-year-old worker, RMF 24 reported.
Another employee was hospitalized after inhaling smoke, but his life is not in danger, local authorities said.
"We had an explosion at the rocket fuel center, which was put into operation a few years ago," the plant's chair, Elzbieta Sreniawska, told RMF 24.
The company's services put out the fire and the incident's causes are currently being investigated.
This is not the first such tragic case to have taken place at the Mesko factory. In September 2021, an explosion killed a 41-year-old woman.
In yet another incident, a 48-year-old woman was seriously injured during a blast in April 2021, later dying due to her injuries.
Mesko, owned by state-run Polska Grupa Zbrojeniowa SA, manufactures various defense products, including Grom and Piorun man-portable air defense systems (MANPADS), Spike-LR anti-tank missiles, and small arms ammunition.
Poland has provided extensive military support to Ukraine, leading to local arms factories significantly increasing production. Mesko signed a contract in 2022 for the supply of ammunition of various calibers to Ukraine.

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