 Bob Agnew reporting. U.S., European, and Arab mediators are pressing to keep stepped-up cross-border attacks between Israel and Lebanon's Hezbollah militants from growing into a wider Middle East war. Hopes are lagging for a ceasefire. With that in mind, American and European diplomats are warning Hezbollah about taking on the military might of Israel. Escalating strikes between Israel and Hezbollah appear to be at least level off this past week, but a former U.S. diplomat of the Middle East says Israelis still seem to be