 Officials in Ethiopia's capital, Addis Ababa have called on residents to register their weapons and get ready to protect their neighborhoods. This is amid fears that rebels could advance on the city. The appeal came days after the Tigray People's Liberation Front claimed it had captured two cities about 400 kilometers from Addis Ababa. The federal government has declared a nationwide state of emergency. The U.S. has urged the rebels not to try and take Addis Ababa. The capital has a population of more than 5 million people.