The European Commission and the European Council will send a joint team of senior officials to the round of trilateral peace talks in Abu Dhabi that the United States will host between Ukraine and Russia.
The negotiations will unfold over two days: 10 and 11 November.
"The EU will be present alongside our partners," Commission President Ursula von der Leyen said on Monday morning after speaking with Ukrainian President Volodymyr Zelenskyy.
"Freedom of navigation in the Black Sea must be restored and preserved. I reiterated my support for his (Zelenskyy's) call for a ceasefire covering food and energy infrastructure."
A spokesperson for the European Council also confirmed the participation.
The institutions will be joined by the E3: France, Germany and the United Kingdom.
The EU team will be led by Bjoern Seibert, von der Leyen's chief of cabinet, and Anna-Maria Boura, chief foreign policy advisor to European Council President António Costa.
Both institutions previously indicated their willingness to engage directly with the Russian delegation, something that has never happened in the context of the peace talks.
At this stage, however, it is not clear if this face-to-face will happen.
Jared Kushner, the US special envoy, said last week that the multilateral format would be organised "if progress is made", though he did not say whether this would be in Abu Dhabi or elsewhere at a later date.
Kushner's long social media post laying down principles to reframe Europe's security architecture after the war has triggered pushback among allies, with Zelenskyy calling it "dangerous". European officials believe the discussion is premature and misguided given that Russia is yet to make a single concession at the negotiating table.
The confirmation of the EU team comes after Italian Prime Minister Giorgia Meloni sent a scathing letter to Costa complaining about the "disarray" in diplomatic formats and demanding the appointment of a special European envoy.
In his reply, Costa agreed to put the issue on the table at this week's informal summit in Dublin, Ireland, which will take place right after the Abu Dhabi meeting.
Polish Foreign Minister Radosław Sikorski agreed with Meloni and warned that Eastern European's interests should be considered.
"The last thing we want is Western Europe dealing with Russia, over the heads of the East Europeans," Sikorski said from Warsaw.
The Abu Dhabi talks will mark the resumption of trilateral peace negotiations since February, when the war on Iran abruptly shifted Washington's focus.
The Ukrainian delegation will be led by Rustem Umerov, head of the Foreign Intelligence Service, together with Kyrylo Budanov and Sergiy Kyslytsya, head and deputy head of the president's office; and Davyd Arakhamia, leader of the ruling party in the Parliament.
The Russian delegation will be headed by Vladimir Medinsky, aide to President Vladimir Putin, and Deputy Foreign Ministers Sergei Ryabkov and Mikhail Galuzin.
The US will be represented by special envoys Steve Witkoff and Kushner.
