The White House joined Kiev tonight in accusing Russia of a "flagrant violation of international law" after a convoy of lorries carrying humanitarian aid crossed the border with Ukraine without permission.
It said Russia should remove them immediately, or face further economic sanctions.
ITV News' Europe Editor James Mates reports from Washington:
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The report also said that many graduates do not even see a 'earnings premium' from their years at university.
The country's counter-terrorism forces have regained control of the facility.
The commissioner of the Metropolitan Police has said he cannot promise the public an attack will not take place.