Does Obama have an ISIS messaging problem?

(CNN) – President Obama has not yet formulated and articulated a comprehensive strategy to take on ISIS, the jihadists running rampant in Iraq and Syria.

But he got another chance Wednesday in Estonia, when he responded to the video ISIS released showing the second beheading of an innocent American by these terrorists in as many weeks.

The President had just landed in Estonia, the first stop on his four-day trip that will include a key NATO conference in Wales.

Just as he did after ISIS executed American James Foley, Obama sternly condemned ISIS over Steven Sotloff, the American beheaded in the most recent, horrific ISIS video.

But then, his critics are saying, he undercut his own message just a few sentences later.

CNN's Jake Tapper reports.