WASHINGTON (AP) — 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 in some deliveries last week — a move that he felt wasn’t properly coordinated with the White House, according to three people familiar with the matter.

When a reporter asked Tuesday who approved the pause, President Trump responded curtly: "I don't know. Why don't you tell me?"

President Trump lashed out at the Russian leader on Tuesday, signaling an change in his posture toward the conflict.