What must be true
- [INFERRED] The binding constraint is confidence / dis-ease, not affordability: the couple can pay; what is at risk is losing money and still feeling unwise, and spending months of peace.
- [FACT] Japan is a normal-precautions advisory with no Middle-East routing dependency; Western Europe is increased-caution; neither blocks insurance.
- [FACT] Non-Gulf routing (via Singapore or Hong Kong) avoids the fragile Gulf-hub airspace entirely.
- [DECISION] The first commitment is a 14-day get-it-in-writing step, not a booking.
- [DECISION] The recommendation is Japan, premium economy, non-Gulf routing; hold Gulf-hub Europe until the insurer confirms in writing and the ceasefire holds.