kigali u.n. subcommittee torture prevention suspend visit rwanda cite obstructions impose government compromise fact-finding mission rwandan authorities bar u.n. delegation access detention sit make impossible conduct private confidential interview statement u.n. body publish friday say body say third time 10 years suspend mission call rwanda cooperate body abide international obligations incident mar human right record government lead president paul kagame face mount criticism human right group say widespread abuse muzzle independent media suppression political opposition u.n. body say people group interview suspend seven-day mission say fear reprisals must place persons cooperate us danger say rwandan authorities immediately available comment deny accusations unlawful detention torture document recently human right watch report publish month report say government routinely torture detainees beat asphyxiations mock executions electric shock prominent critic rwandan president bar run presidency diane shima rwigara detain kigali september face charge forgery electoral document incite insurrection say court last week say family supporters subject torture judge say rule bail request monday u.n. torture watchdog end trip rwanda cite obstruction