Ukraine war briefing: Ukrainian leaders lay out details of long-awaited minerals deal with US / 4/30: CBS Evening News Plus / Georgian Stars Shine on Day 2 of Tbilisi Grand Slam / What will it take to get measles under control? / 'Russia has no regard for climate issues' / The Inherent Contradictions Of Mark Twain / At the Paris Opera, two dazzling ballets bridging contemporary and classical dance / Georges Bizet Festival presents little-known works by author of 'Carmen' / Asia's incredible country that's 34C in May and 'better than Vietnam and Thailand' / Washington signs historic rare earths minerals deal with Ukraine / Who are the cardinals tipped to be the next pope one week before the conclave? / U.S. and Ukraine sign economic deal that includes terms for natural resources in the war-torn country