Here's a detailed timeline of events, which shows the White House was aware of the pause in real time and Trump's decision to reverse the action -- following an unproductive phone call with Russian President Vladimir Putin and a subsequent series of brutal Russian assaults on Ukraine.

President Donald Trump’s decision to send more defensive weapons to Ukraine came after he privately expressed frustration with Pentagon officials for announcing a pause last week in the delivery of some critical weapons to Ukraine.

The Trump administration has resumed sending some weapons to Ukraine, a week after the Pentagon had directed that some deliveries be paused.