Is Qatar a member of the Hague Convention?
Oct. 2010 update.
Qatar is not a member state of the "Hague Conference (on private
international law)."
Although a diplomatically-recognized country may not be a member
of the conference they can still signed any particular treaty that
the conference produces.
There are 39 separate current "Hague Conventions" (drafted after
1950). The word Convention in this context means Treaty.
In general, most middle eastern countries have not signed on to
many of the Hague treaties, so if someone asked you about any
middle-eastern country's signature on any Hague convention you will
almost always be correct if you guess no.