'We've seen constraints in countries like Vietnam and Thailand on air travel, but this is also spilling over to Europe,' an ING analyst told CNBC.

'We've seen constraints in countries like Vietnam and Thailand on air travel, but this is also spilling over to Europe,' an ING analyst told CNBC.

Flights could soon be cancelled if supplies from the Gulf remain blocked, says the International Energy Agency.

PARIS: Passenger flights could be grounded in the next two months because of a global shortage of aviation fuel caused by the Middle East war, industry experts warned on Thursday.…