Gaza militants fire rockets into Israel

Gaza militants resumed their intense bombardment of southern Israel on Monday, with some rockets slipping through Israel's Iron Dome defense system and one landing in the yard of a kindergarten.

There was no word of casualties, but the second day of violence threatened to unleash a new round of hostilities just a week before Israel heads to elections.

Israeli Prime Minister Benjamin Netanyahu threatened Gaza's Hamas rulers with a "war" if the new round of rocket fire continued, ramping up his rhetoric amid the final stretch of his campaign.

The Israeli military said it identified 14 rockets fired in the hour-long spree, of which it intercepted 12.

Shortly after, the military began striking sites linked to militants in Gaza.