GAZA CITY, Jan 20: The UN chief inspected the devastation wrought by Israel’s onslaught in Gaza on Tuesday, leading a moment of silence at the smouldering UN headquarters, as the territory’s Hamas rulers held victory rallies.

Secretary-General Ban Ki-moon, appearing stern and saddened at a ceremony at the burned out UN headquarters in Gaza, demanded an Israeli investigation into strikes on United Nations facilities. Ban asked the crowd to honour victims of the offensive, who included nearly 40 Palestinians who had sought refuge at a UN school shelled by Israel.

“It has been especially troubling and heartbreaking for me as secretary-general that I couldn’t end this faster,” he said. He warned the truce was fragile, and called on Israel and Hamas to “exercise maximum restraint and nurture the ceasefire”.

Thousands of Hamas supporters thronged a square outside the remains of the parliament building in Gaza City, which was heavily damaged in an Israeli air strike at the outset of the war. Two men hoisted a sign in carefully scripted Hebrew, reading: “The resistance will be victorious, Israel has been defeated.”

Ban later visited the rocket-scarred Israeli town of Sderot, where he called the Hamas’ attacks over the last eight years against Israeli residents “appalling and unacceptable”.

Israel and Hamas both ceased fire on Sunday, after an offensive that claimed the lives of some 1,300 Palestinians, according to Gaza health officials, and 13 Israelis.

Israel mounted the air and ground campaign against Hamas on Dec 27 in an effort to force Gaza militants to halt years of rocket fire on southern Israel and to cripple arms-smuggling operations. The fighting stopped before Israel achieved those aims, though the Egyptian-brokered truce hopes to address the issues of arms smuggling and reopening Gaza’s blockaded border crossings in its next stage.

The UN chief personally intervened during the war to try to stop the violence, and said over the weekend that he was sending a team to assess the humanitarian needs so the United Nations could issue an emergency appeal for funds.

Calling the crisis a “collective political failure”, Ban said he would share the findings of his trip to Gaza with world leaders.

The first estimates by independent surveyors said Gaza lost nearly $2 billion in assets, including 4,100 homes, about 1,500 factories and workshops, 20 mosques, 31 security compounds, and 10 water or sewage lines. Shattered glass and mounds of rubble littered city streets.

Ban called the attacks on the UN headquarters and two of its schools “outrageous” and demanded a full investigation through proper judiciary systems. He also demanded guarantees it would never happen again.

Homeowners digging through the debris in Gaza City, the territory’s largest city, carried off vases, refrigerators, dishes and baby beds, some loading their goods into cars and trucks. Utility crews began planning repairs to electrical and sewage and water systems.

A senior technician, Mofid Awad, said 80 per cent of the electricity grid in Gaza City was damaged.

Before setting off for Gaza, Ban met with Israeli Prime Minister Ehud Olmert, who told him Hamas could not be allowed to lead the reconstruction process in Gaza and thereby gain some measure of legitimacy, Olmert’s office said in a statement.The UN and international organisations must lead the reconstruction in conjunction with the Palestinian Authority and Egypt, which has been mediating between Israel and Hamas, Olmert said.

Ban said his discussions with Olmert focussed on withdrawing all Israeli troops from Gaza and how to open Gaza’s border crossings.

Ban is the most senior international official to visit Gaza since Hamas militants seized power in June 2007.—AP