amenable to the jurisdiction of the tribunals. an act of defiance in respect of the directjudicial order has the potential to precipitate a constitutional crisis. if with impunity litigants are allowed to decide which orders they wish to obey and which they wish to ignore, then our constitution is not worth then our constitution is not worth the paper upon which it is written. rebel forces in ethiopia s northern province of tigray have entered the regional capital mekelle which was seized last year by federal troops. a rebel spokesman says they are in full control of the city and called for international agencies to bring in desperately needed aid. the fighters have been advancing on mekelle for several days. the humanitarian situation in tigray is desperate, with hundreds of thousands facing starvation. david campa nale reports. mekelle has been held by federal troops and their allies for the past eight months after they launched