Hun Sen rejected their demands , bringing several months of political stalemate .
At the same time , they also called for Hun Sen to step down and a reform of the NEC , which they claimed was stacked with pro-CPP appointees .
Hun Sen rejected pro-CPP 's demands , bringing several months of political stalemate .
At the same time , they also called for Hun Sen to step down and a reform of the NEC , which they claimed was stacked with pro-CPP appointees .