How do you blockade a planet?

[couslee]

I have done that when I want to force a surrender. I use tactical combat, and just hit "e" 30 times without moving the ships. the battel is considered a draw, but it puts them in orbit and establishes a blockade. It would be nice to have an "establish blockade" order instead of having to go through the hassel, but alas that is not there. I will blockade any number of planets when going for surrender. When first establishing the blockade, you need to know if there are any WP there, if so, destroy those, then back off the planet and E through to the 30th round.
If your happiness has a factor applied to "combat-draws" then you might have other things to deal with in establishing a blockade, but those are secondary to the actual purpose of it.