What really happened before the Trump administration released aid to Ukraine - The Washington Post

When the administration of President Trump decided earlier this year to withhold aid to Ukraine for two months, government officials and members of Congress were not offered an explanation for the stoppage. Members of Trump’s Ukraine team have told House impeachment investigators that they were asked by Ukraine what prompted the halt and were not able to offer a reason. Senate Majority Leader Mitch McConnell (R-Ky.) similarly indicated that he was not given a reason....
 https://www.washingtonpost.com/politics/2019/11/15/what-really-happened-before-trump-administration-released-aid-ukraine/