Malaysia Airlines Flight 370 vanished while en route from Kuala Lumpur, Malaysia, to Beijing on March 8, 2014, with no signals or warnings of anything wrong. Its disappearance remains the greatest commercial aviation mystery ever.
Russia's War Against Ukraine
USA Today: One year later: What we do, don’t know about MH370
Officials recover wreckage from flight MH17, shot down in east Ukraine on July 17 2014.