Another treaty was drafted regulating the use of submarines and outlawing the use of poison gas in warfare.  
One of its products was the Four-Power Pact that annulled the earlier Anglo-Japanese Alliance.  A Nine-Power Pact was also signed, affirming China's independence.  Another treaty was drafted regulating the use of submarines and outlawing the use of poison gas in warfare.  Called by Secretary of State Charles Hughes, it was attended by all the major powers and the colonial powers of the Pacific. FTP, name this 1921-22 series of meetings that eventually resulted in an arms and naval limitation treaty.
One of its products was the Four-Power Pact that annulled the earlier Anglo-Japanese Alliance.  
Washington Naval Conference