US President Joe Biden has warned Israel that Washington will stop supplying some weapons if it goes ahead with its long-threatened ground offensive in Rafah. It’s the starkest warning yet from Israel’s staunchest ally amid growing concerns for the displaced Palestinian civilians living in the south Gaza city. But Biden softened his warning with some words of reassurance, saying the US would “continue to make sure Israel is secure”. On Wednesday, State Department Spokesperson Matthew Miller told reporters Washington had already suspended a shipment containing thousands of bombs. “They have not…