Lufthansa and subsidiaries Swiss, Austrian Airlines suspend Tel Aviv routes until March 28 after Israel bars entry to non-residents from five European nations

Airline does not offer details on possible threat that prompted cancellations

Egypt's minister of civil aviation meets with Britain's ambassador, who apologizes for not informing Egyptian authorities before applying week-long flight suspension

Airline does not offer details on possible threat, Lufthansa also cancels flights for one day; British Foreign Office updates travel warning for Egypt

FAA bars American-registered aircraft from flying over airspace, citing 'potential for miscalculation or misidentification'; several top global companies follow suite