Bono (Paul David Hewson), an Irish singer-songwriter, activist, and the lead vocalist of the rock band U2, performs at subway station which is bomb shelter, in the center of Ukrainian capital of Kyiv on May 8, 2022. (Photo by Sergei SUPINSKY / AFP)

TOPSHOT Bono (Paul David Hewson), an Irish singer-songwriter, activist, and the lead vocalist of the rock band U2, performs at subway station which is bomb shelter, in the center of Ukrainian capital of Kyiv on May 8, 2022. (Photo by Sergei SUPINSKY / AFP)

Bono (Paul David Hewson), an Irish singer-songwriter, activist, and the lead vocalist of the rock band U2, performs at subway station which is bomb shelter, in the center of Ukrainian capital of Kyiv on May 8, 2022. (Photo by Sergei SUPINSKY / AFP)

Bono (Paul David Hewson), an Irish singer-songwriter, activist, and the lead vocalist of the rock band U2, is surrounded by journalists at subway station which is bomb shelter, where he is performing in the center of Ukrainian capital of Kyiv on May 8, 2022. (Photo by Sergei SUPINSKY / AFP)

Bono (Paul David Hewson), an Irish singer-songwriter, activist, and the lead vocalist of the rock band U2, performs at subway station which is bomb shelter, in the center of Ukrainian capital of Kyiv on May 8, 2022. (Photo by Sergei SUPINSKY / AFP)

Bono (Paul David Hewson), an Irish singer-songwriter, activist, and the lead vocalist of the rock band U2, performs at subway station which is bomb shelter, in the center of Ukrainian capital of Kyiv on May 8, 2022. (Photo by Sergei SUPINSKY / AFP)

Bono (Paul David Hewson), an Irish singer-songwriter, activist, and the lead vocalist of the rock band U2, performs at subway station which is bomb shelter, in the center of Ukrainian capital of Kyiv on May 8, 2022. (Photo by Sergei SUPINSKY / AFP)

Bono (Paul David Hewson), an Irish singer-songwriter, activist, and the lead vocalist of the rock band U2 (L), and Antytila, a Ukrainian musical band leader and now the serviceman in the Ukrainian Army Taras Topolia, perform at subway station which is bomb shelter, in the center of Ukrainian capital of Kyiv on May 8, 2022. (Photo by Sergei SUPINSKY / AFP)

TOPSHOT Bono (Paul David Hewson), an Irish singer-songwriter, activist, and the lead vocalist of the rock band U2, and Antytila (C), a Ukrainian musical band leader and now the serviceman in the Ukrainian Army Taras Topolia, perform at subway station which is bomb shelter, in the center of Ukrainian capital of Kyiv on May 8, 2022. (Photo by Sergei SUPINSKY / AFP)

Bono (Paul David Hewson), an Irish singer-songwriter, activist, and the lead vocalist of the rock band U2, Antytila (C), a Ukrainian musical band leader and now the serviceman in the Ukrainian Army Taras Topolia, and guitarist David Howell Evans aka 'The Edge' perform at subway station which is bomb shelter, in the center of Ukrainian capital of Kyiv on May 8, 2022. (Photo by Sergei SUPINSKY / AFP)

Bono (Paul David Hewson), Irish singer-songwriter, activist, and the lead vocalist of the rock band U2, and guitarist David Howell Evans (R) aka 'The Edge', perform at subway station which is bomb shelter, in the center of Ukrainian capital of Kyiv on May 8, 2022. (Photo by Sergei SUPINSKY / AFP)

Bono (Paul David Hewson), Irish singer-songwriter, activist, and the lead vocalist of the rock band U2, and guitarist David Howell Evans (R) aka 'The Edge', perform at subway station which is bomb shelter, in the center of Ukrainian capital of Kyiv on May 8, 2022. (Photo by Sergei SUPINSKY / AFP)

Bono (Paul David Hewson), Irish singer-songwriter, activist, and the lead vocalist of the rock band U2, greets people as he performs at subway station which is bomb shelter, in the center of Ukrainian capital of Kyiv on May 8, 2022. (Photo by Sergei SUPINSKY / AFP)

Bono (Paul David Hewson), Irish singer-songwriter, activist, and the lead vocalist of the rock band U2, performs at subway station which is bomb shelter, in the center of Ukrainian capital of Kyiv on May 8, 2022. (Photo by Sergei SUPINSKY / AFP)

Bono (Paul David Hewson), Irish singer-songwriter, activist, and the lead vocalist of the rock band U2, and Antytila (R), a Ukrainian musical band leader and now the serviceman in the Ukrainian Army Taras Topolia, perform at subway station which is bomb shelter, in the center of Ukrainian capital of Kyiv on May 8, 2022. (Photo by Sergei SUPINSKY / AFP)

Andrii Holovine, priest of the Church of St. Andrew Pervozvannoho All Saints (L) guides Bono (R) (Paul David Hewson), activist and front man of the Irish rock band U2 visiting the site of a mass grave by the church in the Ukrainian town of Bucha, near Kyiv on May 8, 2022. (Photo by Genya SAVILOV / AFP)

Andrii Holovine, priest of the Church of St. Andrew Pervozvannoho All Saints (2nd,R) guides Bono (C) (Paul David Hewson), activist and front man of the Irish rock band U2 and guitarist David Howell Evans aka 'The Edge' (R) visiting the site of a mass grave by the church in the Ukrainian town of Bucha, near Kyiv on May 8, 2022. (Photo by GENYA SAVILOV / AFP)

Andrii Holovine, priest of the Church of St. Andrew Pervozvannoho All Saints (2nd,R) guides Bono (C) (Paul David Hewson), activist and front man of the Irish rock band U2 and guitarist David Howell Evans aka 'The Edge' (R) visiting the site of a mass grave by the church in the Ukrainian town of Bucha, near Kyiv on May 8, 2022. (Photo by GENYA SAVILOV / AFP)

Andrii Holovine, priest of the Church of St. Andrew Pervozvannoho All Saints (2nd,R) guides Bono (C) (Paul David Hewson), activist and front man of the Irish rock band U2 and guitarist David Howell Evans aka 'The Edge' (R) visiting the site of a mass grave by the church in the Ukrainian town of Bucha, near Kyiv on May 8, 2022. (Photo by GENYA SAVILOV / AFP)

Andrii Holovine, priest of the Church of St. Andrew Pervozvannoho All Saints (L) guides Bono (R) (Paul David Hewson), activist and front man of the Irish rock band U2 and guitarist David Howell Evans aka 'The Edge' (C) visiting the site of a mass grave by the church in the Ukrainian town of Bucha, near Kyiv on May 8, 2022. (Photo by Genya SAVILOV / AFP)

Andrii Holovine, priest of the Church of St. Andrew Pervozvannoho All Saints (R) shows Bono (C) (Paul David Hewson), activist and front man of the Irish rock band U2 and guitarist David Howell Evans aka 'The Edge' (L) images on his cell phone visiting the site of a mass grave by the church in the Ukrainian town of Bucha, near Kyiv on May 8, 2022. (Photo by Genya SAVILOV / AFP)

Bono (R) (Paul David Hewson), activist and front man of the Irish rock band U2 and guitarist David Howell Evans aka 'The Edge' (L) visits the site of a mass grave by the Church of St. Andrew Pervozvannoho All Saints in the Ukrainian town of Bucha, near Kyiv on May 8, 2022. (Photo by Genya SAVILOV / AFP)

TOPSHOT Bono (R) (Paul David Hewson), activist and front man of the Irish rock band U2 and guitarist David Howell Evans aka 'The Edge' (L) visits the site of a mass grave by the Church of St. Andrew Pervozvannoho All Saints in the Ukrainian town of Bucha, near Kyiv on May 8, 2022. (Photo by Genya SAVILOV / AFP)

Bono (L) (Paul David Hewson), activist and front man of the Irish rock band U2 and guitarist David Howell Evans aka 'The Edge' (R) visits the site of a mass grave by the Church of St. Andrew Pervozvannoho All Saints in the Ukrainian town of Bucha, near Kyiv on May 8, 2022. (Photo by Genya SAVILOV / AFP)