It's important that we tighten the very leaky economic sanctions regime. >> it seems to me, our best chance of changing the path that north korea is on, but is with crippling sanctions. >> mike: so clearly, the north koreans want relief from most sanctions. your thoughts on north korea? >> north korea, i think, is by far the most difficult situation he faces. and it is snowballing into, something bigger. may be the biggest threat he faces to his reelection, short of the economy falling apart. again, you know, starting to repeat myself, but this is a place where caution -- you can't go back to ...