US national security advisor Robert O’Brien says doesn’t know reason for 55-day hold on aid to Ukraine. As former Ukraine President Poroshenko looks on tells @nickschifrin won’t say if Ukraine meddled in 2016 election.

This is really an embarrassment for the National Security Adviser, and for the United States. https://t.co/DphJTgweET

— Molly McKew (@MollyMcKew) November 23, 2019