Philip Ewing

Philip Ewing is NPR's national security editor. He helps direct coverage of the military, the intelligence community, counterterrorism, veterans and other topics for the radio and online. Ewing joined the network in 2015 from Politico, where he was a Pentagon correspondent and defense editor. Previously he served as managing editor of Military.com and before that he covered the U.S. Navy for the Military Times newspapers.

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.

Each week — and some days, it seems, each hour — brings more clarity to the picture of the Ukraine affair and the political crisis it sparked in Washington over impeachment.

But some of the biggest questions still don't have answers.

Here's a look at where the saga stands, what investigators want to learn and what major decisions still must be reached before the fever breaks.

The Ukraine affair

No one disputes the basic outlines of the Ukraine affair, including President Trump:

Updated at 6:45 p.m. ET

House Speaker Nancy Pelosi did not rule out a vote by the full chamber on its impeachment inquiry into President Trump — but she restated her belief on Friday that none is required for it to move ahead.

Pelosi, D-Calif., said on a trip to Atlanta that she was unmoved by calls from the White House for a full vote. Trump said earlier in the day that he would send a letter to the speaker, which was expected to demand action by the full House.

House Democrats are set to launch a new phase of their impeachment inquiry on Thursday when former Ambassador Kurt Volker, until recently a top State Department representative to Ukraine, is scheduled to meet with investigators.

Then, on Friday, the intelligence community's inspector general, Michael Atkinson, is due on the Hill.

More witnesses are expected next week, all for depositions behind closed doors with members of Congress and their staff.

A tumultuous week in Washington has set the stage for an intense new congressional investigation into President Trump — and what could prove to be a historic clash between the White House and Congress.

The outlines are now clear about conduct that no one, including Trump, disputes: The president asked his Ukrainian counterpart to investigate the family of Vice President Joe Biden, a potential political rival in the 2020 presidential election.

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