The head of the Israel Defense Forces said Tuesday that “the campaign against Iran is not over” as a ceasefire between the two countries went into effect. President Donald Trump also vowed that Israel will not attack Iran and told Israel to bring its pilots home.

The fragile ceasefire between Israel and Iran appears to be holding after a rocky start, giving rise to cautious hope it could lead to a longer term peace agreement even as Tehran insisted it would not give up its nuclear program.

Israel ordered fresh strikes on Iran, as Iran denied violating the truce brokered by Trump just hours earlier.