Time to move to Poland or Hungary.
Welp, I guess its not good idea to move to Poland when you only consider lack of terrorist attacks danger.
1. World Youth Day 2016 will be organised in Poland, His Holiness Francis will be there for few days.
2. NATO summit in Warsaw, Barry Obama will come himself.
3. PiS is currently doing purges inside the army, police, security services (we still have no Chief Commandant of Police and PiS as they follow staunch anti-communism more than 20 years after collapse of "communist" state they mainly focus on the most experienced people only because they worked before 1989) which does not really help. We still have no any legislative act on anti-terrorism (although it is ready, but govt wanted to make it 100% solid - now I guess they will change their mind) and I highly doubt that security services control anything.
I highly recommend you to avoid Warsaw and Kraków in July.