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’s airlines face growing crisis as sanctions strangle aircraft maintenance

Russia’s civilian aviation sector is facing a severe crisis as Western sanctions block access to essential spare parts and maintenance services.
With more aircraft suffering mechanical failures, Russian airlines are resorting to smuggling components from the U.S. and Europe to keep their fleets in the air, according to Radio Free Europe/Radio Liberty. Experts warn that without a steady supply of certified parts, Russia’s commercial planes will soon become unsafe to fly.
Since December 2024, the number of aviation incidents in Russia has surged. Between Dec. 1 and Jan. 20, Russian aircraft experienced 11 engine failures—more than double the number from the previous two months.
A growing number of flights have been forced to make emergency landings, with engine and landing gear malfunctions becoming routine. Many of these incidents involve Boeing and Airbus jets, which make up two-thirds of Russia’s commercial fleet.
Sanctions have made proper maintenance nearly impossible, leaving airlines with few options. Russian carriers can either ground aircraft that require critical safety inspections, take the risk of flying without proper maintenance, or smuggle parts from the West through third countries. U.S. authorities have been cracking down on these illegal supply chains, arresting individuals involved in smuggling schemes.

The latest case, announced by the U.S. Department of Justice on Feb. 13, involved three employees of Flighttime Enterprises, an Ohio-based subsidiary of a Russian aircraft parts supplier. They were accused of illegally exporting $2 million worth of aviation components to Russia.
Russia has tried to develop its own domestic aircraft, but even its flagship Sukhoi Superjet relies heavily on Western components. The government has ambitious plans to produce over 1,000 aircraft by 2030, including the MC-21 model, but experts say mass production is years behind schedule. Russian manufacturers lack the technology to replace key Western-made components, particularly in engines and avionics.
Facing a worsening crisis, Moscow is looking to China for help.
Beijing is developing its own aircraft engines and may eventually supply Russia with alternatives. However, experts believe a reliable replacement for Western aviation technology won’t be available until at least 2029. Until then, Russian airlines will have to continue operating aging aircraft with limited maintenance—raising serious safety concerns for passengers flying within the country.

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