[ ] Backstab: The Lystheni have committed countless transgressions against you. Off the top of your head, unrepentant and systematic spying,
theft and use of military designs, production of a secret navy during a time of existential war, and to cap it all off, the violation of a signed treaty regarding borders, one to which you initially agreed
as a concession to them. The 3rd could deploy to backstop any backlash from you yelling at the Lystheni; they could also just cut out the middleman. Time: 1 year. Cost: 45,000 credits. Chance of Success: 60%. Effect: Describe the situation to Malan, and have him be your arm in the your war with the Lystheni. Failure means
either failure to convince him to declare war on behalf of the Republic of Rannoch and having to shift him to cover the 1st Raiding's patrols so they can do it,
or more conventional military failures.
(Unnecessary, but polite

[ ] Lystheni (Casus Belli): While no
one thing the Lystheni have done constitutes an ironclad cause for war, taken together, considering the history of
continued provocations, they are a damning case. Inform the Lystheni Ambassador of your opinion of such actions, inform the Assembly of the change in your diplomatic relations, and then send the Ambassador and his people home.
This war won't drag on for decades. Time: 1 year. Chance of Success: 100%. Cost: Free. Effect: Declare war on the Lystheni state.
If you do not take, "Backstab," with this, then you will make no organized offensive. If you do not take, "Trade Sanctions," you will conduct no organized withdrawal of your people from Lystheni space in advance of the declaration. Declaring war against a trading partner when most of your forces are already otherwise committed is complicated.
[ ] Lystheni (Trade Sanctions): You no longer trust the Lystheni to host your people, and you no longer care to provide them the materials they've used to keep their projects going. For the safety of your merchants and to choke off the flow of supplies, you are closing down all trade with the Lystheni, and making an organized withdrawal of your people effective
immediately. Time: 1 year. Chance of Success: 70%. Cost 20,000 credits, trade income (-40,000 yearly income). Effect: Halt all trade with the Lystheni, get your people out of there, and close the borders to free travel. The Lystheni, being possessed of non-zero intelligence quotients, will know that something is up. That said, re-opening trade would in and of itself be a potent bargaining chip in any eventual negotiations.
[ ] The Best Way To Deal With Pickpockets...:
...is to cut off their fucking fingers. Whether you're taking this conflict with them loud or not, you want to deal with their network now. You know exactly where it all is. If a part of that network extends past the Lystheni Embassy, rip it out. Anybody outside the embassy walls is fair game. Any equipment out in the open now belongs to you. Time: 1 year. Chance of Success: 85%. Cost: 25,000 credits. Effect: Inform the Lystheni that you
see their intercept devices -- and that their presence does not well please you -- by way of removing it and any of its operators by force. Afterwards, pump them for everything they know or contain.