Un Highest Emergency

Rebel fire on a residential district of Yemen's second city Aden killed more than 30 civilians on Wednesday, as the UN declared its highest level humanitarian emergency in the war-torn country.

The number of attacks on aid workers soared last year to the highest level on record, with Afghanistan the most dangerous country to be a humanitarian, a report on Tuesday said.

Rebel fire on a residential district of Yemen's second city Aden killed more than 30 civilians on Wednesday, as the UN declared its highest level humanitarian emergency in the war-torn country.

The number of attacks on aid workers soared last year to the highest level on record, with Afghanistan the most dangerous country to be a humanitarian, a report on Tuesday said.