You know, in slightly less stable counties I can see the IST Embassy being a modular construction so they can drop it in and get going. Or they have a jumbo jet parked in a hanger in the capital's airport. Could be useful in the event they need to evac, and in the airport's case the diplomatic protections may help with evacuating civilians. Heck, having an embassy be built into a ship that is docked in the capitol would be another way.
A mobile embassy would be a way of having a team travel the world. Given all the people they'd go to, they'd have to be well regarded to prevent diplomatic blunders. Not quite 'best' in the meaning originally specified, but fairly important.
Are there any Space stations or Luna/Mars colonies that could have an embassy as well? For the occasional alien visitor. They'd be either a place to be posted, or to avoid.
A mobile embassy would be a way of having a team travel the world. Given all the people they'd go to, they'd have to be well regarded to prevent diplomatic blunders. Not quite 'best' in the meaning originally specified, but fairly important.
Are there any Space stations or Luna/Mars colonies that could have an embassy as well? For the occasional alien visitor. They'd be either a place to be posted, or to avoid.