Israel has agreed to pause operations in northern Gaza for four hours a day from Thursday, the White House said.
US national security spokesperson John Kirby said the pauses would allow people to flee along two humanitarian corridors and were significant first steps.
"We've been told by the Israelis that there will be no military operations in these areas over the duration of the pause, and that this process is starting today," he added.
The pauses, which would be announced three hours in advance, emerged out of discussions between US and Israeli officials in recent days, including talks US President Joe Biden had with Israeli Prime Minister Benjamin Netanyahu, Kirby said.
Meanwhile, in Paris, officials from about 80 countries and organisations were meeting to coordinate humanitarian aid to Gaza and find ways to help wounded civilians escape the siege, now in its second month.
US peace envoys meet Zelenskyy in Kyiv after Putin talks
US targets three Iranian oil vessels after attack on Navy ships
Israeli strikes kill seven in southern Lebanon
Indonesia's Anak Krakatau eruption halts flights, schools, fishing
Putin says US-Russia contacts beneficial as talks begin with Witkoff and Kushner
Chinese national rescued from Nepal tunnel 10 days after flash flood
US envoys Witkoff, Kushner arrive in Moscow for talks on peace in Ukraine
One dead, 11 people missing after mudslide in China's Jiangxi province
