Jon Polin says he has watched the video of his seriously wounded son being hustled into the back of a truck by Hamas gunmen countless times.

The scene played out just hours after 23-year-old Hersh Goldberg-Polin had spent time with his family on the last day of the Jewish holiday of Sukkot then spent the night dancing at a music festival with friends.

The youngster is just one of more than 200 people kidnapped by Hamas gunmen during their killing spree across southern Israel that began on October 7 and has left more than 1,400 dead.

Israel has one of the best-resourced militaries in the world, heavily supported by Washington. In Hamas, it faces a highly trained armed group with powerful regional allies.

With both sides poised for an Israeli ground offensive in the wake of the deadly attack on Israel by Hamas on October 7, here is an overview of their military resources.

- Israel -

The Israel Defense Forces (IDF) number 169,500, of which 126,000 are army, according to Britain's International Institute for Strategic Studies (IISS).

Cairo's "Summit for Peace" was meant to be a diplomatic breakthrough towards a ceasefire in Gaza, but its failure revealed what one analyst called the "fault lines" between Arab and Western states on the Israeli-Palestinian conflict.

In their opening addresses Saturday, Arab leaders and Western delegates agreed on the need for aid to reach Palestinians in Gaza, besieged and under Israeli bombardment.

But after hours of discussion, they found common ground on little else, with the meeting ending without a concluding statement.

Scores of people rushed to Deir el-Balah hospital to identify bodies on Sunday after Israel stepped up its air strikes on Gaza, as the territory's Hamas rulers said 4,651 people have now been killed since the start of the war.

Authorities said Deir el-Balah in central Gaza, had suffered most from one of the most intense nights of shelling since Israel started its bombardment in response to Hamas' cross-border attacks on October 7.

The widely unpopular Palestinian president Mahmud Abbas is facing growing anger on the streets of the occupied West Bank as Israel wages its war against Hamas in Gaza.

The 88-year-old leader is seen as out of touch with the increasing desperation of the Palestinian people and Israel's furious response to the October 7 attacks by Hamas has only exacerbated their discontent.

Several thousand people rallied in support of Israel in Berlin on Sunday as the German Chancellor Olaf Scholz vowed to stamp out a resurgence of anti-Semitic incidents in the wake of the Israel-Hamas conflict.

Police said around 10,000 people gathered at Brandenburg Gate for the demonstration in solidarity with Israel and in opposition to anti-Semitism, though organisers put the figure at 25,000.

"It is unbearable that Jews are living in fear again today -- especially in our country," Germany's President Frank-Walter Steinmeier told the crowds.

A UN agency warned dwindling fuel supplies could force it to stop aid operations in war-riven Gaza on Wednesday, as calls mounted for a humanitarian "pause" in fighting.

After 18 days of withering Israeli air strikes and a near-total land, sea and air blockade of the Palestinian territory, the UN agency for Palestinian refugees (UNRWA) warned operations were at breaking point.

"If we do not get fuel urgently, we will be forced to halt our operations in the Gaza Strip," said the UN agency, which provides aid to 600,000 displaced Gazans.

Hezbollah will make "the mistake of its life" if it starts a war with Israel, Prime Minister Benjamin Netanyahu said Sunday, as tensions rose on the Israel-Lebanon border.

His remarks came during a visit as the Israeli leader visited troops near Israel's northern border with Lebanon where increasing artillery exchanges have heightened fears of a new front opening as Israel battles Hamas in Gaza.

Israel's defence ministry on Sunday ordered the evacuation of another 14 communities near the border, adding to dozens that have already been told to evacuate.

The United States warned Iran or its allies against any "escalation" in the wake of Israel's war with Hamas, two top US officials said Sunday, hours after the Pentagon moved to step up military readiness in the region.

With tensions mounting, Washington also announced Sunday it had ordered non-emergency staff to leave its embassy in Iraq.

"We are concerned at the possibility of Iranian proxies escalating their attacks against our own personnel, our own people," Secretary of State Antony Blinken said on CBS News. "We expect there is a likelihood of escalation."

With the Israel-Hamas conflict unleashing furious emotions, American universities have struggled to walk an almost impossibly narrow line: satisfying the demands of rich donors that they more clearly support Israel, while also respecting protesters' rights of free expression.

Several wealthy Americans have threatened to withdraw their financial support from prestigious private schools like the Ivy League's Harvard University in Massachusetts, or the University of Pennsylvania, known as UPenn.