The Israeli military says 300,000 troops along with tanks and artillery are amassing near the Gaza border as air-strikes continue to rain down, and Gaza’s government warns all electricity will completely stop there shortly. CNN’s Erin Burnett reports live on the ground. Plus, President Biden has confirmed Americans are among the hostages held by Hamas, and at least 20 US citizens are currently unaccounted for. And, the GOP meet behind closed doors to pick a House Speaker. Also, CNN’s Christiane Amanpour joins to discuss emerging information on the horror of Hamas’ attacks on Gaza border communities.

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