British mega pop star Robbie Williams, a UK Goodwill Ambassador for the United Nations Children’s Fund (UNICEF) since 2001 , signed on last month to front a new campaign launched by UNICEF UK Children in Danger, which “aims to protect children from violence, disease, hunger and the chaos of war and disaster.” Less than a week later Williams announced on his website he’s booked a gig at Hayarkon Park in Tel Aviv on May 2, 2015, as part of his Let Me Entertain You Tour.