Complex sentence: The issue of international service had been previously addressed as part of the 1905 Civil Procedure Convention which was also signed in The Hague, which did not command wide support and was ratified by only 22 countries.
Split into simpler sentences: The issue of international service had been previously addressed as part of the 1905 Civil Procedure Convention which was also signed in The Hague. The 1905 convention however did not command wide support and was ratified by only 22 countries.