Israel's allies have urged it to avoid any escalation, as it considers a response to Iran's unprecedented missile and drone attack.
Israel's Western allies, including France, Germany and Britain, have appealed for Israel to show restraint, warning over further escalation in the region.
Russia, which is more closely aligned with Iran, also warned that further escalation is "in no one's interests", as China's foreign ministry also called for calm.
But an Israeli government spokesman said it's "up to Israel to decide how to defend its people" ahead of the country's war cabinet meeting this afternoon.
David Cameron, the UK foreign secretary, tells the BBC Iran's attack had almost entirely failed, and Israel should be "smart as well as tough".
The UK Foreign Secretary told the BBC that Iran suffered a "double defeat" after its attack on Israel failed and it showed its true nature to the world.
Cameron also insists the UK's efforts are focused on ensuring a pause in fighting and getting aid into Gaza.
The United Nation's general secretary Antonio Guterres said the "Middle East is on the brink" and it was time to "defuse and de-escalate".
The UN continues to warn that famine is imminent in parts of Gaza, as aid agencies maintain that not enough supplies can reach civilians
Tehran launched more than 300 projectiles at Israel on Saturday, in what it said was retaliation for a strike on its consulate in Syria.
Germany's foreign minister, Annalena Baerbock, called for calm.
President Emmanuel Macron says France will do everything possible to avoid a regional conflagration.
