6 AM ET: Another deadly weekend, Putin's new warning, jubilee jubilation & more

We begin this episode with details of a series of deadly mass shootings across the US this weekend. Meanwhile, at least one senator tells CNN he’s more confident than ever that Congress can reach an agreement on gun legislation. Russia’s President says some Ukrainian targets that were off the table could be back on - we’ll tell you why. The UK’s prime minister faces a vote of no confidence today after losing the support of dozens in his own party. And, a surprise guest at Queen Elizabeth II’s Platinum Jubilee. To learn more about how CNN protects listener privacy, visit cnn.com/privacy