NPR's Mary Louise Kelly talks with retired Lt. Colonel and former Trump staffer Alexander Vindman on Russia, Ukraine and his new book.

One of the most prolific figures to emerge out of President Trump's impeachment saga is questioning what Vladimir Putin has on the commander in chief.

However it was during Trump’s first impeachment trial that he rose to prominence – giving evidence about phone calls in 2019 in which the President appeared to pressure Volodomyr Zelenskyy to ...

Obama officials and Trump critics spoke harshly of U.S. Defense Secretary Pete Hegseth after he took returning Ukraine to its ...

Returning Ukraine to its pre-2014 borders is an "unrealistic objective," U.S. Defense Secretary Pete Hegseth said Wednesday.

A key witness in Donald Trump's first impeachment saga suggested Tuesday that the U.S. president might have been compromised ...

Supporters of Ukraine and members of the Ukrainian community hold a ... [+] rally to mark the one-year anniversary of ...

Former Director of European Affairs for the U.S. National Security Council Lieutenant Colonel Alexander Vindman joins Ali ...

The Trump administration is facing widespread criticism for aligning with authoritarian regimes—including Russia, North Korea ...

Russia and the US have agreed to nominate negotiating teams to explore a peace deal for Ukraine but how much can really be ...

Alexander Vindman, a Trump impeachment witness and ... "This will embolden Putin and undermine the interests of peace in Ukraine and Europe. A major blow to U.S. national security," Vindman ...