The authors are on less sure ground in proposing how the EU should react. The good news is that there is less divergence among member states than was the case a few years ago; now that the Poles less hostile to Russia and the Germans less complacent, they have converged around a pragmatic yet mildly principled centre of gravity. The ECFR trio propose some fairly sensible measures to crystallize this convergence, including anti-bribery measures, sanctions against the murderers of Sergei Magnitsky, but also a drastic easing of the visa regime for Russians visiting the EU.
Unfortunately it is not at all clear where the leadership for taking these sensible measures might come from. EU external policies are in crisis, with twelve out of twenty-seven foreign ministers demanding that the beleaguered Baroness Ashton up her game. This year's EU presidencies are held by small countries whose governments are both deep in domestic crisis, and one of which is anyway notoriously pro-Russian. In any case EU leaders will be fully occupied with the new eurozone treaty for the next few months, whether or not they intend to sign it. So this is a set of good ideas which sadly have nobody caable of implementing them.