In the interest of Global development and security, agitators of strife and of human rights violations, should be isolated so as to give Global security a chance to stabilize. Continuing diplomatic avenues to coax these violators into the norms and just practices of the international order have resulted in prolonged instability in Ukraine, the Levant and Asia among other places.
Efforts to engage Russia in respect to the expressed aspirations of the Ukrainian people have resulted in broken agreements and false representations as to the true purpose of Russia's meddling. Such efforts at peaceful engagements with Russia have resulted in extending the Ukrainian dilemma while Russia has continued to stoke the good intentions of Western nations.
Only though isolation would Vladimir Putin understand the gravity of his contribution to stunting Global development and to stirring insecurity. Though he might react like a rabid canine initially, it won't be long before his inner circle succeeds in explaining reality to the leader, who left early from the G20 Summit in Australia, as the first effects of isolation took its toll upon him. Without an International stage to canvas his flawed dream, Putin's negative effect on Global security will wane.
However, Putin's rabid responses could include further forays into Ukraine, Georgia, Armenia or Estonia. Yet, any impacts from his mischief would be lessened if he is isolated.