21.   A member of a powerful Yemeni tribe suspected of being behind a series of bombings in Sanaa turned himself over to police on Wednesday, officials said.

22.   The Yemeni tribes often resort to kidnapping foreigners, including diplomats and heads of oil companies, to pressure the government.

23.   Yemeni tribes frequently kidnap foreigners, including diplomats and oil executives, to try to obtain concessions from the government.

24.   Yemeni tribes frequently kidnap foreigners, including diplomats, to try to obtain concessions from the government.

25.   Yemeni tribes frequently kidnap foreigners, including diplomats, to try to obtain demands from the government.

26.   Yemeni tribes often resort to kidnappings to obtain compensation or concessions from the government.

27.   Yemeni tribes frequently resort to kidnappings to obtain compensation or concessions from the government.

28.   Yemeni tribes frequently kidnap foreigners, including diplomats, to try to obtain demands from their government.

29.   The authorities never publicly admit to paying ransoms to notoriously unruly Yemeni tribes.