Syria has halted military and intelligence cooperation with the United States, its ambassador to Washington said in an interview, in a sign of growing strains between the two nations over the insurgency in Iraq.

The ambassador, Imad Moustapha, said in the interview on Friday at the Syrian Embassy here that his country had, in the last 10 days, “severed all links” with the United States military and Central Intelligence Agency because of what he called unjust American allegations. The Bush administration has complained bitterly that Syria is not doing enough to halt the flow of men and money to the insurgency in Iraq.