A suicide bomber set off an explosive-laden vest in a busy Baghdad square crowded with rush-hour commuters early Monday, killing at least 15 people and wounding dozens, officials said.
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The government has struggled to impose security following the 2011 withdrawal of U.S. forces. Last summer the Islamic State group, which has claimed several previous attacks in and around the capital, swept across a third of the country, capturing the second largest city Mosul. A U.S.-led coalition has been carrying out airstrikes against the extremist group since August.
