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The United States has warned Israel that it could stop supplying weapons to the country if the humanitarian situation in Gaza does not improve.

This is not the first time that Israel’s main ally has threatened to cut off supplies. In May, US President Joe Biden said he would halt some arms sales to Israel if there was an invasion of the southern city of Rafah. But Prime Minister Benjamin Netanyahu continued the election campaign – and the influx of American weapons continued.

But the latest warning, which says Israel has 30 days to improve the humanitarian situation on the ground or risk violating U.S. foreign military assistance laws, represents a significant increase in pressure, suggesting that US military aid could be at risk.

While other countries have dramatically reduced their military aid to Israel over the past year, the United States has not.

Here’s a breakdown of who supplies Israel with weapons:

The United States:

The United States is overwhelmingly the largest arms supplier to Israel. According to a Stockholm International Peace Research Institute (SIPRI) report on international arms transfers, in 2023, 69% of Israel’s arms imports came from the United States. Germany had the second largest share at 30%, followed by Italy at 0.9%. The United Kingdom, France and Spain, among others, made smaller contributions.

The US-imported weapons “have played an important role in Israel’s military actions against Hamas and Hezbollah,” the think tank reported, noting that thousands of guided bombs and rockets were delivered to Israel from the US in late 2023. In January 2024, F-35 and F-15 fighter jets were also delivered to Israel from the USA.

CNN analysis has identified several instances where U.S.-made munitions were used throughout the war, including in attacks that killed civilians. Recently, CNN found that US-made 2,000-pound bombs were likely used in the Israeli attack that killed Hezbollah leader Hassan Nasrallah in Beirut.

According to the US State Department, the US also provides financial support to Israel and has provided over $130 billion in bilateral funding since 1948. In 2019, the two countries signed a memorandum of understanding that ensured that the US would provide Israel with $3.3 billion annually from the foreign military financing program and another $500 million for missile defense.

Germany:

While Germany contributed 30% of Israel’s weapons in 2023, this stock fell significantly over the course of 2024.

Earlier this year, the International Court of Justice rejected a request by Nicaragua to order Germany to stop supplying military aid to Israel. One of their main reasons was that German military aid to the country had fallen from about 200 million euros ($220 million) in October 2023 to 1 million euros ($1.1 million) at the time of the ruling in March.

But on October 10, Chancellor Olaf Scholz said the country had not stopped supplying Israel with weapons, noting that Germany “has delivered weapons and we will deliver weapons.” He added that weapons will be delivered to Israel “in the near future.”

Due to the Nazi Holocaust of Jews in World War II, Israeli security has historically been a core element of German foreign policy.

Italy:

Italy has provided Israel with helicopters and weapons, according to SIPRI, and is a partner in the F-35 fighter jet program, helping to produce parts.

However, Foreign Minister Antonio Tajani told local media at the end of January that Italy had stopped arms supplies to Israel since October 7 last year. All contracts signed up to that point would continue to be honored, said SIPRI.

Pagella Politica, an Italian watchdog group, said Italian companies sold nearly $129 million worth of weapons to Israel in the decade ending in 2022.

The United Kingdom:

The British government says its “exports of military goods to Israel are low.” It said it awarded licenses worth $23.42 million in 2023. However, the UK suspended some military equipment licenses to Israel last year.

Foreign Minister David Lammy suspended around 30 of 350 licenses for Israel after the Labor government took office in July. An official assessment found that there was a clear risk that the weapons could be used “to commit or facilitate a serious violation of international humanitarian law.”

The suspensions affected the supply of some parts for drones and F-35 fighter jets. However, the British government has not suspended the supply of material that was not used in the Israel-Hamas conflict – for example for training purposes.

Spain:

In February, Spain’s Ministry of Foreign Affairs, European Union and Cooperation issued a press release stating that the government had not made any arms sales to Israel since October 7 last year.

On October 11, Spanish Prime Minister Pedro Sanchez condemned what he called “unacceptable” Israeli offensive in Lebanon and called on the international community to stop arms exports to Israel.

“We emphasize the urgency for the Israeli government to cease its hostilities, which violate international law by invading a third country, in this case Lebanon, as well as international humanitarian law, which has even been questioned by the International Court of Justice. he said.

France:

While France has supplied Israel with weapons in the past, the relationship between the two countries has become strained in recent weeks as French President Emmanuel Macron called for an end to arms exports to Israel in order to enforce a ceasefire in Lebanon and the Gaza Strip.

On October 5, Macron called for a complete halt to the sale of weapons “used in the war in Gaza,” stressing that France was not involved in the supply. According to SIPRI, the data does not show French exports of major weapons to Israel in 2019-23, but indicates that France has supplied components for weapons.

CNN’s Mia Alberti, Christian Edwards and Inke Kappeler contributed reporting.