"Violence feeds more violence. What we are witnessing now is a dangerous escalation," EU foreign policy chief Kaja Kallas says as she calls for "resuming negotiations" on Gaza at a joint press conference with Israeli Foreign Minister Gideon Saar in Jerusalem. The most intense escalation since a November ceasefire, which ended the war between Israel and the Iran-backed militant group Hezbollah in Lebanon, occurred on Saturday. IMAGES AND SOUNDBITES