Secretary of State John Kerry said the UN inspectors could not tell the US anything it did not already know about the chemical weapons attack in Syria on August 21.
A intelligence report also said it was "highly unlikely" the Syrian opposition executed the attack.
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Feeling chilly with cloudy skies across northern Britain and Northern Ireland today as rain steadily moves it way from west to east.
An EU referendum, more Scottish powers and tax freezes - but Cameron stopped short of scrapping the Human Rights Act, for now.
More powers for Wales, a ban on income tax rises and more free childcare are at the heart of the Conservative's Queen's Speech.