In an interview with CNN, the president lamented the deaths of civilians in the Palestinian enclave after the Jewish state used bombs from the United States.
His warning came after the US halted shipments of bombs to Israel last week, saying Washington was worried about talk of a ground attack in Rafah.
“If they enter Rafah, I will not deliver the weapons that were used […] deal with cities, Mr. Biden said. “We will not provide weapons and artillery shells that have been used.”
Israel launched strikes in Rafah on Wednesday as negotiators and mediators meeting in Cairo tried to agree on the release of hostages and a ceasefire in the seven-month war.
Gaza’s bloodiest war ever began after Hamas launched an unprecedented attack on October 7 that killed some 1,170 Israelis and foreigners, mostly civilians, in Israel, according to AFP figures based on official Israeli figures.
Hamas also took about 250 hostages, of which Israel knows about 130 are still in the Gaza Strip, including 35 dead hostages.
After vowing to destroy Hamas, Israel launched a massive military offensive that killed 34,844 people, mostly women and children, in the Gaza Strip, according to the Hamas-ruled territory’s Health Ministry.