It is not that war on the continent is unthinkable—Ukraine has taught us to prepare for worst-case scenarios. But by comparing Putin to Hitler, Applebaum and others make diplomacy impossible. The 1939 analogy suggests that Munich has come and passed, that humanitarian disaster awaits, and that war in Europe is not only possible but necessary. Applebaum’s comparison is not entirely new (humorists and twitterati have been referring to Putin as “Putler” since Russia invaded and annexed Crimea in March), but it represents a renewed alarmism that has become increasingly prevalent in mainstream media in recent weeks.

The September 5 Minsk ceasefire agreement shows us that the time for diplomacy has not passed. Ukrainian President Petro Poroshenko recently met with Putin in Minsk, and set in motion the diplomatic process that yielded the ceasefire agreement. If Putin is Hitler, such talks are meaningless.

The alarmism of Applebaum and others resonates in Russia. On September 2, Russia Today, a Kremlin-funded propaganda outlet aimed at foreign audiences, picked up on Applebaum’s op-ed. RT’s article, entitled “The Apocalypse from Applebaum: Putin Will Make Poland a Nuclear Target,” notes her relationship to Sikorski several times, implying that Applebaum is speaking not only for herself, but for her husband and perhaps even the West more broadly. The line between policy and punditry is thus blurred for the audience. One Russian news website, also emphasizing Applebaum’s relationship with Sikorski, argued that “Observers of events in Poland, on the basis of [Applebaum’s] statements, can certainly conclude which way the Polish Foreign Ministry will lean.”

In Russia's relationship with the West, perception is often paramount, and escalatory rhetoric can become a proxy for policy. Russian leaders interpret as aggressive, statements and actions Western leaders consider benign. Putin recently recounted the EuroMaidan Revolution at a youth forum northwest of Moscow: “Our Western partners, with the support of fairly radically inclined and nationalist-leaning groups, carried out a coup d’état there. No matter what anyone says, we all understand what happened. There are no fools among us. We all saw the symbolic pies handed out on the Maidan. This information and political support, what does it mean?” In the Western narrative, Assistant Secretary of State Victoria Nuland’s decision to hand out pies on the Maidan in Kyiv was a symbolic gesture in support of Ukrainian democracy, not a threat to Putin’s sphere of influence. Perception matters, and alarmist rhetoric shapes perception.

Such alarmism is particularly potent as the United States and Europe struggle to formulate a credible response to Russian actions in Ukraine and de-escalate the crisis. With tensions running high and diplomacy struggling to find a way out of the crisis, inflammatory rhetoric violates the first rule of foreign policy: do no harm.

Isaac Webb is a junior fellow in the Carnegie Endowment for International Peace’s Russia and Eurasia Program.