Israel is lobbying members of Congress to press South Africa to drop its legal proceedings in the International Court of Justice (ICJ) over the war in Gaza, according to an Israeli foreign ministry cable obtained by Axios.

Why it matters: South Africa has until Oct. 28 to give the top UN court its arguments for continuing the case against Israel over alleged violations of the Genocide Convention during the war in Gaza.

• Israeli officials say they want members of Congress to make clear to South Africa that there will be consequences for continuing to pursue the case.

Behind the scenes: Israeli officials said the Israeli foreign ministry started a diplomatic campaign in recent weeks to press South Africa not to push forward with the case at the ICJ. The U.S. congress is a main tool in the effort.

• On Monday, the Israeli foreign ministry sent a classified cable to the Israeli embassy in Washington, DC and to all Israeli consulates in the U.S. about South Africa's ICJ case.

• "We are asking you to immediately work with lawmakers on the federal and state level, with governors and Jewish organizations to put pressure on South Africa to change its policy towards Israel and to make clear that continuing their current actions like supporting Hamas and pushing anti-Israeli moves in international courts will come with a heavy price," the cable read.