Wooooww
That is pretty stupid to say.

Disturbance at this place!
INVESTIGATE!

Random ship appeared near trade planet!
Random ship just disappeared!
That's weird. Anyways, go back to the usual.

I do not see how you find a disturbance, with a good chance of being nothing at all except a sun going supernova, or a black hole forming, and decide to send people to find out what it is during a crises, but when you see hard evidence of something else that is unknown, you pass it off as nothing at all, that it wasn't a scout or something. 

If you're going to have a nation act a certain way, follow that certain way, and don't change into uncharacteristic action. That's like having a whole-family-murdered hard cold mob boss cooking a cake and singing karaoke for fun.