The document says that last year Russia took a series of internal and global anti-terrorist initiatives, which consolidated this key role.
Russia's political, legislative and law-enforcing initiatives contributed to international co-operation efforts, the State Department believes.
The report points out a series of successful anti-terrorist efforts inside the country.
According to the Department of State, the most serious terrorist threat in Russia comes from Chechen territory.
Local insurgents in the North Caucasus remain the most serious terrorist threat for Russia and were responsible for the murder of hundreds of Russian citizens, both civilian and military, the report says.
There is evidence of foreign terrorists in Chechnya, though most of the terrorist activity has internal roots and links with Chechen separatists, the document says citing the Russian Prosecutor General's Office that in 2003 90% of terrorist acts committed in Russia were perpetrated in Chechnya and the neighbouring regions.
Terrorists' strategy of using an increasing number of women for random terrorist acts meant to be a sensation has become a key development in 2003, the authors of this report say.
