Legal news Roundup - June 29, 2011Compiled By Heather Gardiner CanadaB.C. woman joins court battle for assisted suicide, The Vancouver SunCUPW to take Canada Post to court, CBC News Twin brothers die following assault in Alta. park, National PostUnited StatesProbe launched over alleged physical fight between judges, ReutersFormer Boston mob boss heads back to court, ReutersInternationalUN court refers genocide case back to Rwanda, ReutersChristine Lagarde first woman to head IMF, BBC News