and they have threateneded. if he does win, does get elected, they'll come in and remove him by force. ordinary people in the capital are concerned about the threat of violence. people are concerned that it could turn into civil war. the u.n. as well. they are concerned they could be on the brink of civil war. >>> turkish police fired tear gas and water canon to break up a rally in istanbul. protesters say turkey is not doing enough to stop the attacks by i.s.i.l. demonstrators were held after a suicide bomber killed 30 people near the turkish town. 100 were injured. we have more. >> the explosion happened in the garden of a center in a turkish town. most of the week were due to travel to kobane across the border in syria, to carry out relief. it's not yet known what caused the blast. turkey's president says it was a terrorist attack by a suicide bomber. minutes after explosions there was a blast. i.s.i.l. laid siege to the town in september last year prompting tens of thousands of people to escape to turkey by