Do not have an army that is too powerful. Consider only having a single barracks. You have to defeat them with your palace guards. Preferably, upgrade them to death squad. Pay them low wages to lower their loyalty. Then, issue a kill order on the faction leader. This will inevitably lead to a military coup.
Build twelve docks. You will now have twelve available ships that can be assigned to trade routes.
Repeatedly praise Russia every 12 months, create trade routes with Russia, and import communists to get into a hostile relationship with the United States. They will eventually decide to invade. You will have a warning from Penultimo stating "Hostile warships entered our waters" when this happens.
Keep a high relationship status with the United States. Use trade routes with the United States, Praise and have a delegation with them through your embassy. Do not spy or expose secrets on them. Complete U.S.-related missions.