[srmanuel]

What would be scary if is some country announced they had successfully reversed engineered alien spacecraft and were prepared to demonstrate it to the public, especially if they showed any offensive military capability

The instability between governments would instantly be off the charts

[going hot]

As long as an individual or population competes to control each other, take land and resources (good to be king and all that implies) and generally attempt to foist their way of life on other populations, enslave , or simply eat the opposition ANY improvement or technology will be applied to weaponry asap.

That goes up and down the ladder of life on this planet, from bacteria on up.

It likely remains to be seen if these traits are shared off world.