Prime Minister Benjamin Netanyahu’s office said he had ordered the aerial attacks after Hamas’s “repeated refusal” to release the remaining hostages it holds. “This is just the beginning,” he said.

Prime Minister Benjamin Netanyahu’s office said he had ordered the attack, the first major strikes in Gaza since the cease-fire with Hamas began in January. The health ministry in Gaza said that hundreds had been killed.

The call will be the first known conversation between the two leaders since Ukraine agreed to support a U.S.-backed monthlong cease-fire, as long as Russia does the same

They were American tourists hoping for a good time, they said. Then they became captives of an autocratic government.

The devices will be used to airlift heavy, dangerous loads normally carried by mountain guides. They might even deliver a hot meal or two.

Her mother, Gisèle, was at the center of a trial that gripped France and made her a feminist icon. But it left Caroline Darian with her own pains and suspicions unanswered.

The call, scheduled for Tuesday, will be the first known conversation between the two leaders since Mr. Putin laid out numerous conditions for a cease-fire with Ukraine.

The decision is the latest indication of the Trump administration’s move away from holding President Vladimir V. Putin of Russia accountable for crimes committed against Ukrainians.

An attack on a U.N. helicopter has highlighted rising tensions in the world’s youngest country, where a seven-year-old peace deal looks ever more fragile.

Sectarian-driven killings of civilians this month displayed the government’s weak control over both its own forces and affiliated fighters, experts said.