[quote=@DancingEagle]
<Snipped quote by ClocktowerEchos>

If the only way to trade with Ryuykyu is to put their flag on Oxfreight's ships or some other arrangement, Yuard will probably do so, as it's substantially less costly and risky than escorts or, you know, war. Although, if we must battle, I do like the idea of something like World War One, where the world was a clusterf--k of alliances and promises, and the events for the 1910s slowly unfolded into an all-out war.
[/quote]

How it works is that they have to fly the Ryukyuan flag under their own flag and will have to carry seals of approval on board. The pirates and bandits are will informed.
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As for a war between Ryukyu and Oxfreight, its probably in the best interest for everyone that it doesn't happen, especially with alliances. Both Ryukyu and Oxfreight have well-trained, highly motivated and well armed troops plus lots of backup man power. The war would destroy lands of both nations and the lands between them, plus thousands of civilian causalities. It will probably end up with one side exhausting all their resources or the creation of a new super weapon (like that greek fire/napalm stuff [@Sini] was talking about). 

Even after the war, the side who "won" will still not be in any position to be superpower like they currently have the capacity to be. Some other nation(s) will have to pick up the title of "super power" and the arms races that ensues for the greek napalm will result in a spy and information war. And that has the possibility of throwing Tannis into another war, this time with greek napalm.

So in the name of not destroying the land before we find new lands to colonize, I suggest people to join Ryukyu for tea ceremony and trade agreements :P