Iran’s supreme leader, Ayatollah Ali Khamenei, has meanwhile praised the attacks on social media, saying the "Zionist regime will be eradicated at the hands of the Palestinian people and the Resistance forces throughout the region," WSJ reported.
The Israeli government officially declared war on Sunday, the first time the nation has made such a declaration since the Yom Kippur War of 1973, after terrorist organization Hamas launched a surprise attack on the nation, launching rockets from the Gaza Strip.
Israel’s ambassador to the United Nations, Gilad Erdan, said Sunday that Iran is behind the attack.
"We know that there were meetings in Syria and in Lebanon with other leaders of the terror armies that surround Israel so obviously it’s easy to understand that they tried to coordinate. The proxies of Iran in our region, they tried to be coordinated as much as possible with Iran," Erdan said, according to the Wall Street Journal.
At least 1,100 people have died since the war began on Saturday, according to officials, including at leasr 700 people in Israel. At least 400 were killed in Gaza after the Israeli military hit more than 800 targets in the Gaza Strip.
Hamas has reportedly taken a large amount of hostages amid the attacks, including women and children, while U.S. officials are working to confirm if American citizens have been taken hostage.