As part of last week's Stand Up For Ukraine fundraising campaign, activists, advocates, artists and entertainers called on world leaders to pledge their support for those forcibly displaced in the country.
A global social media rally came ahead of a pledging event in Warsaw, Poland, hosted by Global Citizen in partnership with European Commission President Ursula von der Leyen and Canadian Prime Minister Justin Trudeau, which raised over $10bn in grants and loans to support those who've fled their homes in Ukraine.
Posting a new acoustic version of Walk On, with updated lyrics, Bono and Edge added:
'The brave people of Ukraine are fighting for their freedom -- and for ours -- in the face of unspeakable violence and an unjust invasion. More than 4 million people, mostly women and children, have had to flee for their lives -- a population nearly the size of Ireland. World leaders must stand up and stand by Ukranians now ... those who are fighting and those who have fled ... and stand with refugees everywhere who have been forced from their homes and their lands.' #StandUpForUkraine