Reuters – A Japanese opposition politician on Thursday submitted a set of demands to ruling party lawmakers who are proposing a bill to legalise casino gambling, pushing back much-awaited parliamentary debate to next Wednesday at the earliest. The delay raises the risk of the bill failing to pass parliament this year, which would dampen the hopes of global casino firms keen to unlock a gaming market expected to be worth up to $40 billion a year in time for the 2020 Tokyo Olympics. Pro-casino lawmakers had aimed to begin debate in the lower house this week – before the end…