Stay up to date with notifications from The Independent Notifications can be managed in browser preferences. All News Sport Culture Lifestyle Eurovision's Look Mum No Computer shares story behind how he wrote 'Eins, Zwei, Drei' The Eurovision Song Contest commences on Tuesday in Vienna , with its 70th anniversary overshadowed by significant divisions regarding Israel 's participation. Five nations, including Spain, Ireland, the Netherlands, Slovenia, and Iceland, are boycotting the competition in protest of Israel's inclusion, following previous pro-Palestinian demonstrations at past events. Vienna is under tight security, with police from across Austria and Germany deployed, due to planned pro-Palestinian demonstrations and an ongoing high terror threat level. Israeli singer Noam Bettan is set to compete in Tuesday's semi-final, aiming for a place in Saturday's grand final, despite the European Broadcasting Union (EBU) having rejected calls to expel Israel.…