Prince Charles appeared to pass on a handshake with US Vice President Mike Pence during an event to commemorate the 75th anniversary of the liberation of Auschwitz, footage showed.

In the video, which was posted on social media, Prince Charles is seen shaking hands with other attendees standing in a row, until he arrives in front of Mr Pence.

The Prince of Wales then appears to completely ignore Mr Pence, walking over to Benjamin Netanyahu, the Israeli prime minister, instead.

Mr Pence appears to have a belated response to the apparent snub, but it is not immediately clear if he reached his own hand out to shake Prince Charles’.

The Holocaust memorial convened in Jerusalem on Thursday and was billed as Israel’s biggest-ever international event as delegations from nearly 50 countries attended.

Remembering the Holocaust Show all 16 1 /16 Remembering the Holocaust Remembering the Holocaust 80,000 shoes line a display case in Auschwitz I. The shoes of those who had been sent to their deaths were transported back to Germany for use of the Third Reich Hannah Bills Remembering the Holocaust Barracks for prisoners in the vast Auschwitz II (Birkenau) camp. Here slept as many as four per bunk, translating to around one thousand people per barracks. The barracks were never heated in winter, so the living space of inmates would have been the same temperature as outside. Hannah Bills Remembering the Holocaust Hannah Bills Remembering the Holocaust Sign for the Auschwitz Museum on the snowy streets of Oswiecim, Poland Hannah Bills Remembering the Holocaust The Gateway to hell: The Nazi proclamation that work will set you free, displayed on the entrance gate of Auschwitz I Hannah Bills Remembering the Holocaust A disused watchtower, surveying a stark tree-lined street through Auschwitz I concentration camp Hannah Bills Remembering the Holocaust Stolen property of the Jews: Numerous spectacles, removed from the possession of their owners when they were selected to die in the gas chambers of Auschwitz Hannah Bills Remembering the Holocaust A sign bearing a skull and crossbones barks an order to a person to stop beside the once-electrified fences which reinforced the Auschwitz I camp Hannah Bills Remembering the Holocaust The peace and the evil: Flower tributes line a section of wall which was used for individual and group executions Hannah Bills Remembering the Holocaust Life behind bars: Nazi traps set to hold the Third Reich’s ‘enemies’. In Auschwitz’s years of operation, there were around three hundred successful escapes. A common punishment for an escape attempt was death by starvation Hannah Bills Remembering the Holocaust Burying the evidence: Remains of one of the several Auschwitz-Birkenau gas chambers Hannah Bills Remembering the Holocaust Hannah Bills Remembering the Holocaust The three-way railway track at the entrance to Auschwitz-Birkenau camp. This was the first sight the new camp arrivals saw upon completion of their journey. Just beside the tracks, husbands and wives, sons and daughters and brothers and sisters were torn from each other. Most never saw their relatives again Hannah Bills Remembering the Holocaust A group of visitors move through the Auschwitz-Birkenau camp. Viewed from the main entrance watchtower of Auschwitz-Birkenau Hannah Bills Remembering the Holocaust "The Final Solution": The scale of the extermination efforts of the Nazis at Auschwitz-Birkenau can be seen by comparing the scale of the two figures at the far left of the image to the size of the figure to the left of the railway tracks' three point split Hannah Bills Remembering the Holocaust Each cattle car would transport up to one hundred people, who could come from all over Europe, sometimes from as far away as Norway or Greece. Typically, people would have been loaded onto the trucks with around three days food supply. The journey to Auschwitz could sometimes take three weeks. Hannah Bills

Heads of state, including France's Emmanuel Macron, and Russian president Vladimir Putin, gathered at the Yad Vashem Holocaust memorial centre to remember more than one million people, mostly Jews, who were killed in the Auschwitz-Birkenau death camp.

Prince Charles spoke during the event and warned that “hatred and intolerance still lurk in the human heart”.

He said the lessons of the Holocaust are still “searingly relevant”.

“The magnitude of the genocide that was visited upon the Jewish people defies comprehension and can make those of us living in the shadows of those indescribably events feel helplessly inadequate,” he said.

Ahead of the event, the prince met with Israeli president Reuven Rivlin and expressed a commitment to battle antisemitism.

He also met with survivors of the Holocaust and was invited to commemorate his visit by planting an oak tree in the garden of Beit HaNassi, the president’s official residence.

Mr Pence used his speech at the event to urge world leaders to confront Iran by “[exposing] the vile tide of antisemitism”.

He said: “In that same spirit, we must also stand strong against the leading state purveyor of antisemitism, against the one government in the world that denies the Holocaust as a matter of state policy and threatens to wipe Israel off the map.

“The world must stand strong against the Islamic Republic of Iran.”