A lot easier than into Gaza, and they managed that too.
those sea lanes are patrolled EN MASSE by hundreds of assets (ships, radars, airplanes, satellites, etcetera) based right across the channel there in DJ (which is largely a foreign military parking lot with a dozen or more bases ... USA, France, UK, and many more).
and yet all these “Yemeni” rockets and bombs and other military supplies seem to get in there? This does not make any sense whatsoever... something is not very transparent in how these things are coming down on us