Estonian Prime Minister Kristen Michal has said the authorities are ready to close the border immediately if the threat assessment changes, including if Russia announces mobilisation.

Russian Defence Minister Andrei Belousov has awarded a medal to the captain of the Soobrazitelny, a corvette which fired signal flares towards a Danish Armed Forces helicopter in international waters near Gedser.

Lithuania's National Defence Minister Robertas Kaunas said on the afternoon of 15 September that a drone that entered the country's territory appears not to have contained explosives.

Russian Foreign Minister Sergei Lavrov has said Russia would secure the return of its gold and foreign currency reserves frozen in the EU.

NATO Secretary General Mark Rutte believes Russia's strike on a passenger train locomotive in Ukraine near the Polish border shows the desperation of Kremlin leader Vladimir Putin.

The Kremlin has said Russian forces are carrying out their tasks across the entire territory of Ukraine and will continue to do so.

A drone believed to be of Russian origin has been recovered from the water near a beach in Poland's West Pomeranian Voivodeship.

Grzegorz Braun, leader of the Confederation of the Polish Crown party, has damaged a monument to the Ukrainian Insurgent Army (UPA) in the village of Białystok in Poland.

Polish Foreign Minister Radosław Sikorski arrived in Kyiv on 11 September.

Poland's Statistics Office has reported that the country incurred losses of more than PLN 490 billion (about €113.5 billion) in connection with the war in Ukraine.

US President Donald Trump has said that he had a "great" conversation with Russian leader Vladimir Putin at the beginning of the week and that Putin wants to make a deal to end the war in Ukraine. Meanwhile, he has stated that the talks are dragging on because Putin and Ukrainian President Volodymyr Zelenskyy "hate each other".

US President Donald Trump has welcomed the victory of the far-right Alternative for Germany (AfD) party in the election in Saxony-Anhalt.

Italy's Foreign Minister Antonio Tajani has announced a new aid package for Ukraine.

UK Prime Minister Andy Burnham has responded to statements by Kremlin spokesperson Dmitry Peskov regarding the Russia-Ukraine war.

European Council President António Costa has said that Ukraine has helped build a new, truly geopolitical European Union that takes responsibility for its own defence and is willing to welcome Ukraine.

Keith Kellogg, US President Donald Trump's former special envoy for Ukraine, has arrived in Ukraine and visited Odesa Commercial Sea Port during his trip.

Unlike Sweden and Poland, Denmark has refused to help Germany investigate the 2022 sabotage of the Nord Stream gas pipelines.

Polish Prime Minister Donald Tusk has said Germany should not hold those suspected of blowing up the Nord Stream gas pipelines criminally liable.

German media outlets have reported that the security services have discovered a secret weapons cache near Berlin which is believed to have been set up on the orders of the Russian secret services.

The Swiss Federal Council extended support measures for people fleeing the war in Ukraine until 4 March 2028 at its meeting on 19 August, but introduced restrictions.