Happening now breaking news, second ship seized after its revolutionary guard seized a

British flag tanker in the Strait of Formuz. Iran sends tension soaring by

grabbing a second ship and with the US military

believes was a pre-planned operation. CNN has learned that armed US aircraft

are keeping watch over an American ship in the region. Can't stop, won't

stop President Trump renewing his attacks on a minority

congresswoman, he's now praising his campaign crowd which chanted send her back, saying that

rally was attended by incredible patriots.

Preparing for Mueller with mock hearings and strategy sessions

lawmakers are scrambling to prepare for next week's testimony by former Special

Council Robert Mueller.

We have new information on Democrats plans to focus on areas of potential obstruction by the president.

And Putin's Arctic policy, Russia's Vladimir Putin flexing his muscles

with a new show of military might,

this time in the Arctic.

Does a new missile test signal a new threat to American aircraft.

Wolflitzer is off. I'm Brianna Keeler. You're in the situation room. This is CNN breaking news.

We have breaking news Iran,

dramatically raising tensions

and raising the stakes in the Gulf region by seizing two oil tankers.

Iran's Revolutionary Guard says it's captured a British flag ship in the Strait of Hormuz,

and a U.S. official says a Liberian flag vessel has also been grabbed.

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