The Taoiseach is expected to hold his first face to face meeting with Ukrainian President Volodymyr Zelenskyy in the capital Kyiv today.
Micheál Martin travelled by train overnight and will take part in a series of engagements, including a visit to the Ukrainian parliament.
President Zelenskyy invited Mr. Martin to Ukraine, after they spoke on the phone two weeks ago.
Fianna Fail MEP Barry Andrews says it's the first time an Irish Taoiseach has visited the country:
The timing is really extraordinary, we're going through one of the most barbaric attacks on international law.
The people of Ukraine are experiencing so much loss and hardship and I think the Taoiseach really does represent all the people of Ireland in being present and having an engagement with president Zelensky.
