The notice came five days after civil war broke out between northern and southern Yemen.
Civil war broke out on May 5 between northern and southern Yemen.
Several aid workers were kidnapped while in northern Yemen.
Kawkaban is a town in the northern Yemen.
This are also worn in northern Yemen.
His mother was Ethiopian and his father had emigrated from northern Yemen.
About 50,000 tourists visited northern Yemen in 1988, contributing more than $17 million in foreign exchange.
It is a small city bordering northern Yemen.
Until 1962 central and northern Yemen had been ruled by a series of local imams.
Extreme elevations exceed 12,000 feet (3,660 m), in northern Yemen.