The US has given Israel support the green light to launch a military assault on Gaza’s southern city of Rafah, a leading Palestinian politician has reported, despite reports that relations between Joe Biden and Benjamin Netanyahu are at breaking point. Mustafa Barghouti, General Secretary of the Palestinian National Initiative, told Al-Jazeera that Biden’s warning to Israel that it should not launch an attack without a plan to safeguard the city’s inhabitants is de-facto support for a military campaign, which NGOs warn could kill thousands. Without publicly backing a ceasefire, Biden is effect…