Yes...who can ever forget Hitler. I think sending the F22's sends a signal that needs to be sent both in terms of America's support for Nato and the implied threat of retaliation against the encroachment by the Russians into Ukraine.
There's so many things to worry about on a global basis its often hard to know what's most concerning ?
Its ironic you mention investing in defence. I actually looked into who makes the predator drones the other day, (I think there will be stunning exponential growth in demand for weaponised drones as war's by proxy evolve in different theatre's all over the world). General Atomics...here you are
https://en.wikipedia.org/wiki/Genera..._MQ-1_Predator
I wouldn't mind betting they can't build these things fast enough but I don't have the stomach to invest in weapons manufacturers.