Ursula von der Leyen, President of the European Commission, has announced that she will give the portfolio of European Commissioner for Enlargement and Recovery of Ukraine to the Slovenian diplomat Marta Kos, and not, as expected, to Latvian politician Valdis Dombrovskis.

An advertising campaign praising Vice President Kamala Harris's experience with Ukraine and criticising former President Donald Trump's approach to Russia is being launched in key US states that traditionally play a decisive role in presidential elections.

At a briefing on Friday, 13 September, EU foreign policy spokesperson Peter Stano stated that Kremlin leader Vladimir Putin’s threats to consider NATO and European countries as participants in the war.

On behalf of the European Union, Josep Borrell, EU High Representative for Foreign Affairs and Security Policy, has condemned the delivery of Iranian-made ballistic missiles to Russia and announced new sanctions against those involved.

Lithuanian Foreign Minister Gabrielius Landsbergis arrived in the capital of Ukraine on 13 September. 

A number of European Union countries are concerned about the decision by Kristalina Georgieva, Head of the International Monetary Fund (IMF) to plan to engage with Russia for the first time since its full-scale invasion of Ukraine.

Republican vice-presidential nominee JD Vance has outlined the Trump administration's prospective plan to settle the war in Ukraine, which includes establishing a "demilitarised zone" on Ukrainian territory and denying Ukraine NATO membership.

UK Prime Minister Keir Starmer has stressed that Russia is the aggressor and Ukraine has the right to defend itself, responding to Russian leader Vladimir Putin’s remarks.

Russia has revoked the accreditation of six staff members of the UK Embassy in Moscow, accusing them of conducting intelligence and subversion. 

Josep Borrell, EU High Representative for Foreign Affairs and Security Policy, has submitted a proposal to member states to impose sanctions on Iran over its supply of ballistic missiles to Russia.

Estonian President Alar Karis arrived in Kyiv with a visit on Thursday, 12 September.

Bloomberg reports that the decision to ease Western restrictions on long-range strikes against targets on Russian territory is unlikely to be made before the meeting of world leaders at the UN General Assembly in the United States on 24 September.

The White House has been finalising a plan to ease restrictions on Ukraine's use of US-provided weapons for strikes on Russian territory.

Ukraine and Lithuania signed a memorandum of cooperation in the defence sector on Wednesday.