1.   Large parts of Yemen remain lawless, and tribesmen have used kidnappings to pressure the government into providing money or projects.

2.   Large parts of the country remain lawless, and tribesmen have used kidnappings to pressure the government into providing money or projects.

3.   Large parts of Yemen remain lawless, and tribesmen have used kidnappings to pressure the government for money or projects.

4.   Several small homes used by tribesmen to fire on the government troops were destroyed in the exchange, the sources said.

5.   Several buildings used by tribesmen to fire on the government troops were destroyed in the exchange, the sources said.

6.   They said the tribesmen did not use force.

7.   Tribesmen typically use kidnappings to pressure the government into providing new roads, water or clinics.