opposition leader say flee cambodia fear arrest call western donors wednesday impose target sanction prime minister hun sen government save democracy southeast asian nation mu sochua 63 leave cambodia tuesday say tip among next target crackdown opposition cambodia national rescue party cnrp leader kem sokha arrest month ago charge treason elections due next year opposition party accuse hun sen 65 arrest harass leaders critics extend 30 years power time statements pass time sanction target sanction also suspension technical aid government cambodia mu sochua tell reuters time democracy long international community wait speak reuters southeast asia request location specify security concern say last week around half cnrp members parliament flee cambodia sanction could include visa restrictions top officials mu sochua say target export garment mostly unite state european union livelihoods hundreds thousands cambodian workers depend respond mu sochua comment government spokesman phay siphan say reason country impose sanction cambodia commit peace pluralism rule law sovereign state protect sovereignty say say could comment potential arrest would matter judiciary government accuse opposition plan revolution oust hun sen whose rule span cambodia three-decade transformation break state khmer rouge genocide one region fast grow economies hun sen call color revolution similar movements part balkans former soviet union 2000s since kem sokha arrest mu sochua emerge outspoken deputy say grow worry weekend suspect plain clothe police follow rally countryside tip-off monday hun sen threaten arrest opposition leaders mu sochua say senior government official send record speech say say yes say arrest go week say yes say mu sochua know internationally decades campaign sex traffic women right insurrection charge detain seven days 2014 could easily bring back say government say plan charge mu sochua say international move hun sen aim preserve democracy talk target sanction also talk give mr. hun sen time think adjust give opposition civil society free media space next 10 months time prepare elections say western countries condemn arrest kem sokha crackdown non-governmental organizations civil right group independent media country 16 million people take concrete step shock international community especially cambodia donors essentially give hun sen free pass step crackdown phil robertson deputy asia director human right watch say statement western donors play essential part rebuild cambodia 1991 peace accord end civil war influence wan cambodia economy strengthen china become important ally u.s. senators john mccain dick durbin introduce resolution tuesday call u.s. state treasury departments consider put top cambodian officials list could stop visit unite state china far big donor cambodia give verbal support hun sen. former khmer rouge commander defect group help drive power 1979 deaths estimate 1.7 million people exclusive cambodian opposition leader call sanction leadership