On 12 oct 2000, several U.S

Original warning text

1. THE LEVEL OF RISK FOR FOREIGNERS IN YEMEN REMAINS HIGH. ON
   12 OCT 2000, SEVERAL U.S. CITIZENS WERE KILLED AND MANY MORE
   WERE INJURED IN AN INCIDENT INVOLVING A U.S. NAVY SHIP IN THE
   PORT OF ADEN, YEMEN IN WHAT MAY HAVE BEEN A TERRORIST ATTACK.
   AN EXPLOSION IN THE MORNING OF 13 OCT 2000 CAUSED MINOR DAMAGE
   TO THE BRITISH EMBASSY IN SANAA, YEMEN AND NO CASUALTIES. WHILE
   U.S. AND YEMENI OFFICIALS ARE STILL COOPERATING CLOSELY TO
   DETERMINE THE CAUSE OF THE TRAGIC EXPLOSION, THE INVESTIGATION
   HAS ONLY STARTED. UNDER THESE CIRCUMSTANCES, U.S. MARINERS
   SHOULD AVOID YEMENI PORTS FOR THE PRESENT.
2. IN LIGHT OF THIS AND OTHER RECENT EVENTS, THE U.S. DEPARTMENT
   OF STATE WARNS U.S. CITIZENS TO DEFER TRAVEL TO YEMEN. U.S.
   CITIZENS SHOULD EXERCISE A VERY HIGH LEVEL OF CAUTION AND
   SHOULD ONLY TRAVEL BETWEEN CITIES BY AIR OR WITH AN ARMED
   ESCORT. THEY SHOULD REGISTER WITH THE U.S. EMBASSY IN SANAA
   AND REMAIN IN CONTACT WITH THE EMBASSY FOR UPDATED SECURITY
   INFORMATION AT (967)(1)238-844 THROUGH 238-852.