A fair amount of time spent in the rum store required if I'm to get my head around this scenario.If you look at Singapores IFVs there is a political and foreign policy dimension at play. Say it decided to acquire 300 German IFVs plus ancillary equipment all sourced from Germany. Normally no problems because Singapore and Germany have a good relationship. However one day the PRC does something to really annoy Singapore so Singapore decides to invade the PRC in order to give it a good thrashing and teach it a lesson in manners. Germany chokes on its beer, is very put out by Singapores actions, and slaps an arms embargo on Singapore, meaning no ongoing support of any kind for its 300 German built and maintained IFVs. Hence these expensive examples of high quality German engineering are parked up, about as useful as electric coat hangers and Singaporean Army is short 300 IFVs. Most of the scenario is fantasy apart from the fact that Germany does slap arms embargoes on nations that it believes are in the wrong, such as committing aggressive war, abusing human rights etc. Saudi Arabia is its favourite target at the moment. So by building it's own IFVs etc., it negates most of those problems. That's just one example.