One of Ayatollah Ali Khamenei’s closest confidants, Mr. Larijani emerged as the face of the government after Mr. Khamenei was killed.

A teaching hospital and two markets in the city of Maiduguri were hit in what a military spokesman said were suicide bombings by Boko Haram.

The attack hit a drug rehabilitation facility, Afghanistan said, suggesting that its victims included civilians. Pakistan said it had targeted an ammunitions depot.

Ali Larijani, one of Iran’s most senior leaders, was killed in overnight strikes, Israel’s defense minister said. Iran did not immediately comment on the claim.

Barraged by Iranian attacks and questioning the value of security ties with the United States, nations in the Gulf have turned to Ukraine, Australia and Italy for help.

With the Xi-Trump summit almost certainly delayed, and tensions rising over the war in Iran, vital issues for both the U.S. and China are also being cast into uncertainty.

Cuba’s deputy prime minister said his country would announce on Monday a move to allow Cubans abroad to own businesses on the island and to invest in infrastructure.

This time, President Trump went to war without preparing the public, seeking U.N. approval or even consulting allies. But they will have to pick up the pieces.