question: botswana 's vice-president festus mogae arrived here this afternoon to start his five-day official visit to china at the invitation of the chinese government .

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summary: botswana 's vice-president arrives in beijing

question: a militant group 's announcement that it was ending a cease-fire in nigeria is linked to the government 's failure to keep promises to the oil-producing region , analysts and activists said sunday .

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summary: unmet vows tied to ebb of a truce in nigeria

question: iraqi officials have received reports that the leader of al-qaida in iraq was killed by sunni tribesmen or extremist rivals , but the chief government spokesman said tuesday the information has not been confirmed .

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summary: iraqi government spokesman cites reports that al-qaida in iraq leader killed

question: tokyo stocks closed lower wednesday following news that a u.s. chip maker sharply cut its outlook for the current quarter .

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summary:
tokyo stocks close lower