U.S imposes new sanctions against Iran amid tensions following its strike this week on military bases in Iraq, where U-S troops are housed. House Speaker Nancy Pelosi says she'll send articles of impeachment against President Trump to the Senate next week. Meanwhile, there's more drama for Britain's royal family, as Prince Harry and Meghan Markle announce they are stepping away from their royal duties. Plus, a recap of the Consumer Electronics Show. Correspondent Allison Keyes has these stories and more on the CBS News Weekend Roundup.
