The White House has called a Russian convoy's move into Ukraine a "flagrant violation" of the country's sovereignty and urged Russia to remove it or face more economic sanctions.
White House deputy national security Ben Rhodes told reporters that sending the convoy into Ukraine adds to the escalation of the conflict "in a dangerous way."
The United States plans to discuss the situation with the UN Security Council later today, he added.
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At times a little fair weather cloud may bubble up - and there will be a fairly brisk southeasterly breeze - but it will still feel hot.
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She told reporters: "I don't think it's fully sunk in how really bad that could have been, I know it's not the right decision."