Germany didnt have a choice when they took in those refugees. If Germany didnt take them In the USA wouldnt have called sanctions on them for violating the ganeva convention and brought up what happened in WW2 with the mass deportation of those evil jews. Germany has the refugees on close watch and last i heard they were deporting large numbers of them everyday
Germany is actually facing a serious situation because of America's actions. Germany is forced to take refugees from the Middle East, and it's extremely easy for ISIS fighters to slip in amongst the chaos. Germany has to constantly be vigilant about its borders, and they are living the War on Terror in a way that Americans don't have to. Of course Germans are doing everything they can to fight terror.
Yes, Germany is doing everything is can to defeat ISIS. After all, there is only so much that can be done. ISIS is a growing threat across the world, and it is important for countries like Germany to be vigilant. The fact that they are arresting these men shows they are doing their best.
I'm not familiar with what Germany is doing to combat Isil. I'm sure German intelligence is doing as much as it can to stop terrorists. Honestly, if we all knew what was being done, it would be easier for terror cells to sneak in or get around security measures, so the general public doesn't need to know, only those agencies that are working to stop terror.
No, Germany is not doing everything it can to fight terror. Germany has allowed so many Syrian people to enter its borders. If Germany were to be doing everything in its power to stop terrorism, it would not allow refugees to cross its borders. The problem is that, as a country, you can't just deny people from crossing into your country.