 Meanwhile, U.S., European and Arab mediators are also pressing to keep stepped-up cross-border attacks between Israel and Lebanon's Iran-backed Hezbollah militants from spiraling into a wider Middle East war that the world has feared for months. Iran and Israel traded threats on Saturday of what Iran said would be an obliterating war over Hezbollah. The Americans and Europeans are warning the group it should not count on the United States or anybody else being able to hold off Israeli leaders if they decide to execute battle-ready plans for an offensive into Lebanon.