Bono has met with German Chancellor Angela Merkel at the annual summit in Davos, Switzerland.

The Irish rocker, a prominent activist, said he was "delighted" with her keynote speech to the World Economic Forum of global business leaders and policy makers.

He said he was honoured newly-elected Merkel saw him immediately after her address, before Afghan President Hamid Karzai and Mohamed El Baradei, director of the International Atomic Energy Agency.

Their meeting was brief and Merkel was heard promising to meet the U2 singer, who was sporting a cowboy hat and rose-tinted glasses, at greater length later in the year.

Bono has a long history of involvement with political causes and took a major part in organising the Live 8 event, along with fellow Irishman Bob Geldof.

Also present at the event were UN representative Angelina Jolie and her boyfriend Brad Pitt.

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