ALI ROGIN: In today's other news, Israeli forces opened fire near two aid distribution sites run by the U.S.-backed Gaza Humanitarian Foundation, killing at least 10 people, according to witnesses and health workers.

Another 19 aid seekers were shot dead near a northern border crossing and others were reported killed in airstrikes that hit tents and homes.

Israel says it is continuing to strike in an attempt to eradicate Hamas, but Hamas said Saturday that it would not disarm unless a Palestinian state is established.

In Tel Aviv, U.S. Special envoy Steve Witkoff met today with families of Israeli hostages who are calling on their government to end the war and bring back their loved one.

Russia claims its forces captured a village in Ukraine's Donetsk region.

Meanwhile, Ukraine says it struck Russia's Ryazan oil refinery, causing a fire.

The reciprocal strikes hit a day after Ukraine mourned 31 people killed in Kyiv in Russia's deadliest attack on the capital so far this year.

Russia has stepped up attacks despite pressure from the U.S. to come to a cease fire deal by August 8th or face new sanctions.

President Trump says he's ordered two U.S. nuclear submarines to move closer to Russia after former President Dmitry Medvedev said the ceasefire ultimatum is a step towards war.

Medvedev is known for his inflammatory statements.

Trump said, quote, words are very important and can often lead to unintended consequences.

And former Colombian President Alvaro Uribe was sentenced to 12 years of house arrest for witness tampering and bribery.

Uribe is a polarizing figure in Colombia, and his trial has gripped the country for nearly six months.

During his presidency, he waged a military campaign against leftist insurgents and brought security the country hadn't seen in years.

But critics say he should be held to account for bolstering right wing paramilitary groups and for the military's killing of thousands of civilians falsely identified as rebels.

Uribe said he will appeal the verdict.

And a crew of four astronauts arrived at the International Space Station today aboard a SpaceX rocket after a speedy 15-hour trip.

They were welcomed by the crew already on board.

Normal missions last about six months, but the latest NASA crew could be the first to settle into a new eight month rotation designed to line up better with Russia's mission schedule.

Still to come on PBS News Weekend Living Longer and Better Lives, the Science of Super Aging and the Creek Crawlers, a group of neighborhood friends Indiana who are documenting their summer activities and inspiring others along the way.