Nearly 400 more killed in Mosul on May amid rising religious , political tensions . Nearly 400 people have been killed in acts of violence in May , according to a CNN tally . U.N. representative Kobler : `` Systemic violence is ready to explode at any moment '' Martin Kobler : Since December , tens of thousands of Sunni demonstrators have taken to the streets across the country , protesting against the Shiite-led government . Leaders need to take steps immediately .
Nearly 400 more killed in Mosul on May amid rising religious , political tensions . Nearly 400 people have been killed in acts of violence in May , according to a CNN tally . U.N. representative Kobler : `` Systemic violence is ready to explode at any moment '' Martin Kobler : Leaders need to take steps immediately .