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Iran	iran	0.1374
cooperation	cooper	0.1374
Ivanov said	ivanov said	0.0497
security	secur	0.0497
president's	presid	0.0497
questions	quest	0.0497
Washington	washingt	0.0497
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national security adviser	nat secur adviser	0.0497
WHITE HOUSE	whit hous	0.0497
Iranian president	iran presid	0.0497
Sergei Ivanov	serg ivanov	0.0497
Moscow	moscow	0.0497
officials'	off	0.0497