Minister of Foreign Affairs of Poland Radosław Sikorski stated that unlike many other countries, Poland did not prohibit Ukraine from conducting strikes on the territory of the Russian Federation from the beginning.

Russia has been threatening the West with an "escalation" due to defence cooperation with Ukraine since 2022, but these threats have not been implemented and are groundless. 

Lithuania is ready to send its military contingent to Ukraine to assist in troop training, stated the country's Prime Minister Ingrida Šimonytė.

NATO Secretary General Jens Stoltenberg has insisted that Ukraine has the right to strike Russian territory and emphasised that more and more allies agree with this.

The US Department of Defense has stated that the US government has not changed its official position on Ukraine's use of US-supplied weapons to attack Russian territory.

Moldovan Environment Minister Sergiu Lazarencu brought a fragment of a Russian missile to a speech in parliament on 30 May.

Czechia’s Foreign Minister Jan Lipavský has said that Russia continues to pursue its goal to undermine European security architecture, and the West has to show that it understands this.

The Armed Forces of Ukraine will receive 50,000-100,000 large-calibre artillery shells a month under the Czech initiative.

Danish Foreign Minister Lars Løkke Rasmussen has announced that Ukraine will be allowed to use Danish-supplied F-16 fighter jets to strike military targets inside Russia.

France may soon send military instructors to Ukraine, despite concerns from some allies and criticism from Russia, media reports indicate. 

Michael Roth, Chairman of the Bundestag Foreign Affairs Committee from German Chancellor Olaf Scholz's party, has called for Ukraine to be authorised to use weapons supplied by Germany and other Western countries to strike targets in Russia.

President Joe Biden is approaching a change in position to authorise Ukraine to strike Russian territory with American weaponry.

The Swedish government has clarified that Ukraine will receive two ASC 890 airborne early warning and control (AEW&C) aircraft within the largest aid package. 

The German government is cautiously withdrawing its reservations about allowing Ukraine to use Western weapons to strike military targets in Russia.

The White House has stressed that the United States' support for Ukraine will remain unchanged, regardless of who represents the US at the planned Peace Summit in Switzerland.

US Secretary of State Antony Blinken has hinted that the Biden administration may be open to allowing Ukraine to use US-supplied weapons to strike Russian territory.

Important changes in the wording regarding Ukraine's membership prospects will be made at an upcoming meeting of NATO leaders in Washington.

Finland has not imposed any restrictions regarding Ukraine's strikes on Russia’s territory with weapons that it handed over to Ukrainian troops. 

Prime Minister of Sweden Ulf Kristersson has commented on the allocation of the largest package of military aid to Ukraine, which includes, among other things, an ASC 890 airborne early warning and control (AEW&C) aircraft.

Sweden has announced its sixteenth package of military aid to Ukraine, the largest package for the country. It will cost SEK 13.3 billion (about €1.16 billion).

Former US President Donald Trump, during a meeting with his campaign donors, has said that he would have bombed Moscow and Beijing, writes The Washington Post.

Several states have asked Sweden to put on hold the plans to send Gripen fighter jets to Ukraine in order to focus on delivering F-16s.

In response to the decision to enable Ukrainian forces to strike Russia, Josep Borrell, EU High Representative for Foreign Affairs and Security Policy, stated that a balance must be maintained between the risk of escalation and Ukraine's need to protect itself.

Oleksandr Syrskyi, Commander-in-Chief of the Armed Forces of Ukraine, has held a phone conversation with the Chief of the General Staff of the Polish Armed Forces, General Wiesław Kukuła.

Finnish President Alexander Stubb has visited Estonia on a working visit, where, among other things, he discussed assistance to Ukraine.

On 27 May, the Council of the European Union imposed sanctions on two individuals, including Viktor Medvedchuk, a former pro-Russian member of the Ukrainian parliament and close friend of Vladimir Putin, who is the godfather of Medvedchuk’s daughter; and one organisation spreading anti-civil society propaganda in the EU and adjacent countries.

Volodymyr Zelenskyy, the President of Ukraine, has stated that a bilateral security pact with Lithuania will be signed soon.

NATO Secretary General Jens Stoltenberg asks that the allies review the constraints on Ukraine's ban on using Western weaponry against the Russian Federation in the midst of border fighting in Kharkiv Oblast.

Ukrainian Foreign Minister Dmytro Kuleba, in his online appeal to the EU Council of Foreign Ministers on Monday, appealed for faster delivery of more air defence systems and asked the diplomats to support Ukraine's attacks on military targets on Russian territory.