AMMAN (Reuters) - Syrian President Bashar al-Assad is to address the nation Monday as his forces sweep through the northwestern border region with Turkey blocking refugees fleeing a military crackdown on protests against his autocratic rule. (http://feeds.feedburner.com/~ff/reuters/topNews?d=yIl2AUoC8zA) (http://feeds.feedburner.com/~ff/reuters/topNews?i=t_gCHVM1Ha8:uzFV7Q5TZvw:V_sGLiPBpWU) (http://feeds.feedburner.com/~ff/reuters/topNews?i=t_gCHVM1Ha8:uzFV7Q5TZvw:-BTjWOF_DHI) (http://feeds.feedburner.com/~r/reuters/topNews/~4/t_gCHVM1Ha8)