This week’s NATO summit in Wales has been billed as the most important meeting in the organization’s history, “a strategic inflection point,” an occasion for its rebirth, rediscovery, reinvention as a tougher, mightier alliance. The impetus for this new beginning is the worsening situation in Ukraine, which awoke the organization from its slumber by alerting it to the fact that its member states in Eastern Europe are vulnerable to an assault from Russia. Ukraine will be one of the main items on the agenda. Ukrainian President Petro Poroshenko will be on the scene at the Welsh golf resort to plead for help, badly needed after his squabble with Russia on Wednesday, which resulted in yet another failed attempt at a ceasefire. Poroshenko will try to convince European leaders that Russia is not just at war with Ukraine, it’s at war with all of Europe.