washington president donald trump unveil new national security strategy monday call pakistan take decisive action terrorism say washington deal challenge pose north korea weapons program wide-ranging speech trump say security strategy first time address economic security would include complete rebuild u.s. infrastructure well wall along southern u.s. border trump say unite state want pakistan take decisive action help fight extremism washington choice deal challenge pose north korea nuclear missile program trump say security strategy would also end mandatory defense spend limit frequently call sequester mention consult members congress possible bill end cap establish 2013 budget legislation recognize weakness sure path conflict unrivaled power certain mean defense reason security strategy break damage defense sequester trump say go get rid trump u.s. 'no choice deal north korea arm challenge