Zimbabwe's long-running fuel shortage has worsened dramatically, with the country's main airport in the capital Harare running out of aviation fuel.
International airlines have been forced to divert their aircraft.
The country's major fuel supplier temporarily halted deliveries last week after Zimbabwe failed to make payments because of a serious shortage of hard currency.
The controversy surrounding the government's land reform programme has exacerbated the economic crisis.
Motorists in Zimbabwe have become used to going without fuel since shortages first developed last December.
An almost complete absence of foreign currency means the country simply does not have the money to pay for essential imports, such as fuel and electricity.
Until now, though, supplies of jet aviation fuel have been maintained.
But in the past week, flights from South
Africa, Egypt and Britain have all been diverted in search of fuel.
The British Airways flight from Harare to London is now stopping off in the
Kenyan capital, Nairobi, in order to refuel.
Other airlines, including the Australian company, Qantas, had already
announced that they were planning to stop flying to Harare because of a fall in
passenger numbers.
Zimbabwe's tourism industry, which had been the fastest growing part of the
economy, has slammed into reverse because of the economic and political crisis
of the past six months.
Hotel bookings are down about 80% on last year.
The picture is unlikely to improve significantly until the International
Monetary Fund resumes financial assistance to Zimbabwe.
Given President Mugabe's hostile rhetoric and his government's continuing
refusal to enforce the rule of law, there is no sign of that happening in the
near future.