-Exchange of strikes between Israel and Hezbollah is a significant escalation
-Israeli military carried out pre-emptive strikes on Hezbollah targets in Lebanon, Hezbollah fired rockets into Israel
-Largest Israeli attack on Lebanon since 2006 war
-Fear of all-out war in the region
-Hezbollah retaliation for assassination of senior commander
-US warning of failure to agree ceasefire deal between Israel and Hamas
-Hezbollah a more formidable force than Hamas
-Question of appetite in Israel for another war
-Demonstrations in support of Gaza outside Democratic National Convention
-Fear of escalation into all-out conflict
-Both sides say they are ready for full-scale war