A poll by The Economist/YouGov has found that 49% of respondents in the United States "somewhat" or "strongly" disapprove of how Donald Trump is handling Russia's war against Ukraine, while 30% support his approach.

Polish President Karol Nawrocki has said that Warsaw has not ruled out resolving the issue of sending MiG-29 fighter jets to Ukraine.

Hungary and Slovakia did not sign the conclusions of the December European Council meeting on Ukraine, approved on the night of 18-19 December.

European Union leaders have decided that Hungary, Slovakia and the Czech Republic will not have financial obligations under the decision to provide Ukraine with €90 billion in financial support in 2026-2027.

President Volodymyr Zelenskyy has thanked the leaders of the European Union for their decision on financial support for Ukraine in 2026-2027.

The Council of the European Union has imposed new sanctions on more than 40 vessels that form part of Russia's so-called shadow fleet of oil tankers, which Moscow has used to circumvent Western restrictions on its energy sector imposed since the full-scale invasion of Ukraine in 2022.

German Chancellor Friedrich Merz has said he supports using frozen Russian assets to fund Ukraine because he sees no better alternative.

Ukrainian President Volodymyr Zelenskyy has warned that if the EU fails to agree upon funding for Ukraine, it will leave the country in a more vulnerable position and undermine prospects for a diplomatic settlement.

The German government is providing an additional €70 million in assistance to Ukraine in response to Russian attacks on the country's energy infrastructure.

Despite strained relations between Kyiv and Tbilisi, Georgia has unexpectedly signed an international agreement establishing a mechanism to distribute reparations obtained from Russian funds among Ukrainian citizens and businesses affected by Russian aggression.

Kremlin spokesperson Dmitry Peskov has said that Russia's position on a foreign military contingent on Ukrainian territory is well known, although he has described this issue as "a subject for discussion".

Thomas Röwekamp, Chair of the Bundestag Defence Committee, has said he welcomes the proposal to establish European peacekeeping forces for Ukraine and supports German participation.

The United States is said to be preparing a new round of sanctions targeting Russia's energy sector in the event that Kremlin leader Vladimir Putin rejects a potential peace deal in the Russo-Ukrainian war.

Talks on security guarantees have so far left some key elements unresolved, including how long such guarantees would last.

David McGuinty, Canada's Minister of National Defence, during the 32nd meeting of the Ukraine Defence Contact Group (the Ramstein format), announced the allocation of an additional 50 million Canadian dollars (over US$36 million) to support the Ukrainian Armed Forces.

Hungary has not withdrawn from participation in the diplomatic conference on compensation for Ukraine, but it will be represented at the lowest level among all participants.

A meeting of the Ukraine Defence Contact Group (also known as the Ramstein format) has been scheduled for Tuesday 16 December.

If Russia attacks Ukraine again, the United States will respond militarily to the aggressor, said Polish Prime Minister Donald Tusk, who attended the Berlin summit on peace in Ukraine.

Talks between Ukrainian and US delegations on a "peace plan" ended in Berlin on Monday 15 December.

The Council of the European Union has imposed sanctions on a further five individuals and four organisations deemed responsible for supporting Russia's shadow fleet.

The Council of the European Union has imposed restrictive measures on a further 12 individuals and 2 entities over Russia's continued hybrid activities.

Talks between the delegations of Ukraine and the United States regarding the "peace plan" have resumed in the German capital.

According to a study by Info Sapiens, Ukrainians are showing a decline in trust in global leaders, including US President Donald Trump.

The Central Bank of Russia has demanded RUB 18.2 trillion (approx. US$229 billion) from the Euroclear depository over frozen assets.

Hungarian Prime Minister Viktor Orbán has criticised Brussels over the planned written vote to approve a European Commission proposal, based on Article 122 of the EU Treaty, to ban the return to Russia of its assets frozen in the EU.

US President Donald Trump has said he is still uncertain whether his country will attend the meeting in France to discuss the US "peace plan".

Ukrainian President Volodymyr Zelenskyy has said that, following signals from the United States, he asked members of Parliament to prepare legislative amendments enabling elections to be held under martial law.

Russian Foreign Minister Sergei Lavrov has claimed that all "misunderstandings" between Moscow and Washington over Ukraine have been resolved.