John Bolton

President Trump deputized lawyer Rudy Giuliani to run a shadow foreign policy for Ukraine outside the State Department, witnesses told Congress this past week — and the White House said people should "get over it."

It has been a busy week. Here's what you need to know about the latest in the Ukraine affair and the impeachment investigation.

Mister mayor

Giuliani has been an important figure in Trump world for years, but what investigators heard was how central he was in the plan to get Ukraine's government to launch investigations that Trump wanted.

Then-national security adviser John Bolton was distressed about Rudy Giuliani. Trump's personal lawyer had bypassed established procedure for representing the White House with a foreign leader and had launched a secret back channel of communication with Ukraine. The shadowy moves were so potentially combustible that Bolton in private meetings earlier this year called Giuliani "a hand grenade who is going to blow everybody up."

It's no secret that former national security adviser John Bolton did not see eye to eye with President Trump on a whole range of subjects.

But in his first public remarks since his ouster earlier this month, Bolton made clear just how deeply disconnected he was from his former boss on how to handle North Korea.

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STEVE INSKEEP, HOST:

Where does U.S. foreign policy move now that John Bolton is out? President Trump fired his national security adviser, and his disagreements with Bolton suggest how much that job matters.

RACHEL MARTIN, HOST:

Updated at 4:57 p.m. ET

President Trump has fired national security adviser John Bolton, the lifelong proponent of American hard power, after months of division between the men over the direction of foreign and national security policy.

Trump announced the news Tuesday on Twitter.

U.S. national security adviser John Bolton on Sunday defended President Trump's move to order, then cancel a strike on Iran.

"Neither Iran nor any other hostile actor should mistake U.S. prudence and discretion for weakness," Bolton said. "No one has granted them a hunting license in the Middle East."

He spoke in Jerusalem alongside Israeli Prime Minister Benjamin Netanyahu. Bolton said he is in the Middle East for previously scheduled meetings with Israeli and Russian security advisers. And he warned Iran that the U.S. remains a formidable adversary.

The State Department has ordered all "non-emergency" U.S. government employees to leave Iraq right away.

The travel advisory specifically orders the departure of employees at the U.S. Embassy in Baghdad and consulate in Irbil (sometimes spelled Erbil), noting that "normal visa services will be temporarily suspended at both posts."

The Trump administration has announced new sanctions and penalties against Cuba, Venezuela and Nicaragua aimed at both ending the rule of Venezuelan President Nicolás Maduro and weakening Cuba's communist regime.

One of the measures will allow lawsuits against foreign companies operating on property in Cuba that was seized from U.S. citizens during the Cuban revolution — a reversal of more than 20 years of U.S. policy.

The United States will retaliate against the International Criminal Court if it attempts to prosecute any Americans over actions taken in Afghanistan, White House National Security Adviser John Bolton said Monday.

The prosecutor for the ICC, Fatou Bensouda, called for an investigation into possible war crimes and crimes against humanity in Afghanistan, where U.S. troops have been engaged in conflict for nearly 17 years.