providing intelligence and low gistic support. do you think it's going to stay in that limited role? >> i think it certainly will. this is a very tenuous internal conflict. there's a lot of people attempting to make it into a much bigger proxy war of tehran against riyadh, the saudis against the iranians, the shia against the sunnis. but this war has been going on many years inside of yemen. i think the u.s. provide support of saudi arabia in the context of logistic support that secretary kerry has already promised. >> there could be troops on the ground if saudi arabia crosses that border what we see is a continuing convoy. it's focused on the houthis. but another group is there too. is this going to ignore one group and focus on the houthis?