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Hey, good morning, playbookers. I'm Rogumo Mavalin. It's Tuesday. In today's show,

a partial no-fly zone over Ukraine and Biden's bump in the polls. It's your Politico

Playbook Daily briefing.

More than two dozen foreign policy heavyweights have signed an open letter to the Biden administration,

calling for a limited no-fly zone over Ukraine.

The push runs squarely against conventional wisdom in Washington, but their missive will no doubt stir the conversation.

As you've probably heard by now, a no-fly zone over Ukraine has been ruled out by Biden in a wide cross-section of foreign policy leaders.

Senator Marco Rubio succinctly described the idea as leading to World War III.

To set up a no-fly zone, NATO, in essence American pilots would first have to destroy Russian air

defenses. To enforce a no-fly zone, we would have to shoot down Russian planes that violate it.

Putin warned on Saturday that Russia would view any nation declaring a no-fly zone

as, quote, participants of the military conflict.

It's one of the few things that President Joe Biden and Putin seem to agree on

that a no-fly zone would start a war between NATO and Russia.

But in this new letter, these signatories are calling for something a little different.

Quote, a limited no-fly zone over Ukraine, starting with protection for humanitarian corridors

that were agreed upon in talks between Russia and Ukrainian officials last Thursday.

NATO leaders should convey to Russian officials that they do not seek direct confrontation

with Russian forces, but they must also make clear that they will not countenance Russian attacks on civilian areas.

For what it's worth, Putin has a history of violating agreements creating humanitarian

quarters, and experts say something like this could still put NATO countries in the risky

...