Anchored by Jake Tapper, The Lead airs at 4 p.m. ET on CNN.
U.S. Ambassador to Ukraine Geoffrey Pyatt. Plus, a look at Vladimir Putin's international image.
(CNN) – Volunteer search and rescue helicopter pilot Ed Hrivnak was about to launch a training mission with his crew, when the rescue supervisor said he wanted them to investigate a nearby mudslide.
"We had no idea of the concept or the scope of this disaster," Hrivnak tells CNN's "The Lead with Jake Tapper."
Saturday's massive mudslide in rural Washington state covered about a square mile and was caused by groundwater saturation tied to heavy rain in the area over the past month.
"There were downed power lines. We didn't know if they were energized or not. There were trees broken in different directions. There were just a lot of hazards. And the houses exploded from the mud," he says.
In the immediate aftermath, Hrivnak's crew scoured the debris, rescuing eight people over the weekend.
(CNN) – Malaysian officials say they can tell you how Flight 370 ended. It crashed into the Indian Ocean, they'll say, citing complicated math as proof.
They can tell you when it probably happened - on March 8, sometime between 8:11 and 9:15 a.m. (7:11 to 8:15 p.m. ET), handing you a sheet with extraordinarily technical details about satellite communications technology.
What they still can't tell you is why, or precisely where, or show you a piece of the wreckage.
All those uncertainties are too much for relatives of the 239 people aboard the plane, some of whom marched to the Malaysian Embassy in Beijing to denounce the airline, the country and just about everything involved with an investigation that has transfixed the world and vexed experts.
(CNN) – Malaysian officials have been criticized for their handling of the investigation, but the most seething attacks have come from the Chinese. From the beginning, they've raised questions over whether the Malaysians, and in particular the military, were hiding something.
Relatives and supporters held a public demonstration Monday, marching towards the Malaysian embassy in Beijing with signs that said things like "We don't give up."
(CNN) – A new, so-called partial ping may indicate the moment Malaysia Airlines Flight 370 crashed into the ocean.
CNN aviation analyst Steven Wallace and CEO of U.S. Geospatial Intelligence Foundation Keith Masback explain what that final ping reveals about the missing plane. They also weigh in on what Flight 370 will do for the aviation industry.
(CNN) – As investigators work backwards to help narrow the search zone for Malaysia Airlines Flight 370, some of the most critical information may come from the pings the plane sent out after it dropped off the radar.
These pings are almost like breadcrumbs, leaving behind a trail of clues about how long the plane was in the air after it made that southern turn.
But what could be most useful is a newly discovered so-called partial ping, which may indicate the moment Flight 370 crashed into the ocean.
CNN's aviation correspondent René Marsh reports.