KYIV, Ukraine — On Friday morning, native time, I obtained information of among the finest American selections of the conflict: The White Home would not block its European allies from supplying Ukraine with American-made F-16 fighters, a transfer that ought to tremendously improve Ukrainian navy capabilities with out considerably rising the chance of unacceptable escalation in its battle with Russia. (The choice nonetheless must be accredited by some congressional leaders.)

The transfer got here after a diplomatic blitz from Ukraine’s president, Volodymyr Zelensky, earlier than this weekend’s Group of seven summit in Hiroshima, Japan. European leaders had signaled a willingness to produce F-16s from their very own shares and prepare Ukrainian pilots of their use. However till now, the Biden administration had nixed the concept. The reversal is a significant, and welcome, coverage change.

Readers of my Thursday publication know that I spent the previous week in Kyiv, and I can attest to the relentlessness of Ukrainian arguments for superior fighters. I met with Ukrainian leaders throughout the complete spectrum of presidency, together with the protection minister, the overseas minister and ministers and different officers concerned in regulation enforcement and financial reconstruction. I had by no means seen as constant, disciplined messaging as I skilled right here, all of it centered on a single, particular concept: Ukraine wants superior Western fighters. Particularly, they have been asking for American-made F-16s.

The excessive level got here once I met with Oleksandr Kubrakov, the minister for communities, territories and infrastructure improvement, and even an infrastructure minister started the assembly by handing out a printed argument for supplying F-16s to Ukraine. I anticipated (and obtained) that argument from the protection minister, Oleksii Reznikov; I didn’t anticipate it from Kubrakov.

To an extent, they have been preaching to the choir. I got here to Ukraine already believing that Kyiv wanted superior fighters, however I used to be not sure whether or not it wanted F-16s particularly. In spite of everything, European militaries additionally characteristic tons of of European-designed and -manufactured technology 4.5 fighter plane. To know the important significance of Ukraine’s request — and the rightness of the Biden administration’s determination — some fundamental background is important.

The jet fighter age is described in generations, that are classes of plane outlined by their capabilities. There’s some disagreement as to the best way to classify totally different plane, however as a common matter, the primary three generations, operating from the debut of jet fighters to the center of the Chilly Battle, are utterly out of date and should not a part of the controversy. Fourth-generation planes, like early fashions of the F-15 and F-16 and the Russian MIG-29 and Su-27, have been the very best planes of the Chilly Battle and are nonetheless in service in most trendy militaries, together with Russia’s and Ukraine’s.

The apex of present fighter know-how is fifth-generation stealth fighters, which embody the American F-22 Raptor and F-35 Lightning II and Russia’s Su-57. Technology 4.5 is sandwiched between generations 4 and 5: The fighters aren’t stealthy, however they’ve vastly upgraded avionics in contrast with fourth-generation fighters, and so they can deploy extra extremely superior armaments.

Technology 4.5 fighters embody upgraded fashions of the American F-15, F-16 and F-18, in addition to the Eurofighter Hurricane, Sweden’s Saab JAS-39 Gripen and France’s Dassault Rafale. Crucially, the listing additionally consists of the Russian Su-30, Su-34 and Su-35. Russia has tons of of technology 4.5 fighters. Ukraine has none. As a substitute it has just a few dozen Soviet-era fourth-generation fighters.

And therein lies the issue. Don’t be deceived by 2022’s top-grossing film, “High Gun: Maverick,” wherein (spoiler alert) Maverick, performed by Tom Cruise, pilots a decades-old fourth-generation F-14 Tomcat to victory over quite a few enemy fifth-generation fighters. In the actual world, the technology hole would have been decisive.

In line with Reznikov, the protection minister, Russia’s Su-35 (to take a key instance) can hit targets at a variety greater than 5 instances as nice as Ukraine’s MIG-29 can. Furthermore, such 4.5-generation fighters can carry a a lot larger array of superior missiles than can Ukraine’s older fighters. Because of this Ukrainian planes have a extra restricted capability to offer air protection inside the nation and no capability to create air superiority at or close to the zero line, the very fringe of the battlefront, Reznikov mentioned.

What does this imply as a sensible matter? Whereas I’ve firsthand data that Western-supplied ground-to-air missiles (most notably, American Patriot missiles) could be remarkably efficient towards even Russian hypersonic missiles, at greatest, they will defend solely small, confined areas of Ukraine. Huge areas of the entrance and most of Ukraine’s civilians and civilian infrastructure stay unacceptably weak to Russian air assault.

Not solely can F-16s fly the size and breadth of Ukraine to supply enhanced air protection; in addition they have a a lot larger capability to strike Russian forces straight on the entrance and miles past.

This capability is proving much more necessary as a result of a number of Ukrainian officers emphasised to me that Russian jamming has rendered the missiles fired by the vaunted American HIMARS system far much less efficient. (That is how conflict typically evolves: A tactic or know-how works till the opponent develops a profitable response, at which level a brand new innovation is required.) Extra-advanced fighters may interact Russian planes which are utilizing a profitable tactic known as glide bombing, wherein they bomb Ukraine from positions exterior the vary of most Ukrainian antiaircraft missiles.

So why the necessity for American-made F-16s and never European-designed technology 4.5 fighters? The protection minister mentioned that general there could merely be too few of the latter to supply with out dangerously depleting the fighter shares of European allies. In contrast, not solely are 1000’s of F-16s in service throughout American and allied militaries; lots of these plane are being changed by extra superior planes. Thus they’re each quite a few and out there to Ukraine with out degrading NATO capabilities.

Lastly, it’s necessary to handle the potential for escalation. The F-16 — particularly within the modest numbers underneath dialogue — doesn’t current a considerable risk to Russia itself. It presents a considerable risk solely to the Russian invasion. It isn’t a real deep-strike plane, just like the B-1 Lancer bomber and even the F-15E Strike Eagle. It’s a weapon that Ukraine can deploy in a defensive capability and that may strike comparatively shut behind the entrance line. It’s precisely what Ukraine wants.

It’s honest to argue in regards to the timing of the Biden administration’s determination to launch European F-16s. It’s a call that would have been made earlier. Furthermore, the administration remains to be permitting Ukraine to obtain solely F-16s belonging to European allies, not our personal planes. However regardless of that shortcoming, which must be remedied quickly, the basic actuality is that permitting Ukraine any F-16s is the proper determination. It’s the choice one makes when transitioning from a long-term technique of merely protecting Ukraine alive towards a technique of driving Russia from occupied Ukraine and — critically — deterring renewed Russian aggression after this conflict.

Maybe the very best brief argument in assist of the Biden administration’s determination was summed up by the previous Ukrainian protection minister Andriy Zagorodnyuk. He informed me to “ask a NATO common the best way to win this conflict with out aviation.” Offering Ukraine with superior fighters not solely makes its job simpler; it’s an indication the Biden administration is able to flip the web page from serving to Ukraine merely keep away from defeat. Now we’re beginning to assist Ukraine obtain victory — and keep the peace we pray is quickly to return.

The Occasions is dedicated to publishing a range of letters to the editor. We’d like to listen to what you consider this or any of our articles. Listed here are some ideas. And right here’s our electronic mail: letters@nytimes.com.

Comply with The New York Occasions Opinion part on Fb, Twitter (@NYTopinion) and Instagram.