On May 9, 2025, European foreign policy chief Kaja Kallas announced a significant investment of one billion euros to bolster Ukraine's defense industry, a move aimed at enhancing the country's capabilities against ongoing Russian aggression.

During her visit to Lviv, Kallas emphasized the necessity for Ukraine to strengthen its defense mechanisms amid the ongoing invasion by Russia.

Kallas also highlighted the role of innovation in modern defense, reaffirming the EU's commitment to support Ukraine in advancing its defense technologies.

So far, Ukraine's allies have contributed over $1.5 billion to weapon purchases from Ukrainian defense companies, aiming to fortify the nation's military-industrial base.

In June 2024, the Franco-German defense group KNDS announced the establishment of a subsidiary in Ukraine to maintain the Caesar artillery systems, enhancing Ukraine's artillery capabilities.

This funding will be sourced from profits accrued from frozen Russian assets, a financial strategy previously discussed by EU Ambassador to Ukraine Katarína Mathernová.

European Commissioner for Defence and Space Andrius Kubilius indicated that the EU might double military assistance to Ukraine in 2025 by increasing orders from Ukrainian arms manufacturers.

In a related development, Ukrainian and European allies have approved the establishment of a special tribunal to address crimes of aggression committed by Russia since its invasion began in February 2022.

The tribunal's creation was highlighted during a meeting of EU foreign ministers in Lviv, reinforcing the commitment to hold all responsible parties, including Russian President Vladimir Putin, accountable.

Ukrainian Foreign Minister Andrii Sybiha reiterated the importance of punishing those responsible for the aggression, underscoring the need for accountability.

In March 2025, the European Union decided to utilize the interest from frozen Russian assets to provide financial assistance to Ukraine, a move that Moscow has criticized as 'theft.'

President Zelensky of Ukraine expressed his readiness for an immediate ceasefire, contingent upon Russia's actual cessation of hostilities, emphasizing the need for genuine peace.