Alibaba’s A.I. Is a Hit, but Hard to Turn Into a Moneymaker

The Chinese company’s models have won over developers worldwide, but they are open source — so they can be used and modified freely.A Shanghai technology fair booth for Qwen, a family of artificial intelligence models that the Chinese company Alibaba started in 2023.

M Meaghan Tobin and Xinyun Wu

In Trump’s Second Midterm, Democrats Are Looking for Fighters

Attitudes in the party have shifted, Democrats say, with a growing appetite for outsider candidates vowing to overhaul the system. Some worry that the trend could be costly in November.Darializa Avila Chevalier, left, and Claire Valdez, holding the U.A.W. sign, are on track to double the number of D

T Tim Balk

As Trump Cools on NATO, Turkey Hosts Summit Meeting

As President Trump cools on the alliance, its members see Turkey’s large military and vibrant defense sector as assets.Workers in the Turkish capital, Ankara. Turkey will use the NATO summit to showcase the country’s status as a rising power.

B Ben Hubbard

Russia Strikes Kyiv, Ukraine’s Capital, on Eve of NATO Summit

Ballistic missiles were fired into the capital of Ukraine as Russia launched its second major attack in less than a week. At least 12 people were killed, officials said.A building damaged by a Russian missile and drone attack in Kyiv, Ukraine, on Monday.

C Carlotta Gall, Stanislav Kozliuk and Cassandra Vinograd

Ukraine Remade Air Defense, but Russia Has Changed Its Attacks

Ukraine has changed how militaries use Patriot systems. But recent attacks prove that clever adaptations cannot overcome a shortage of interceptors.Ukrainian and German soldiers standing near a Patriot air defense system at a training ground in Germany in 2024.

S Siobhán O’Grady and Liubov Sholudko

Turkey Hosts NATO Summit While Cracking Down on Critics

In the weeks leading up to the two-day event, the Turkish authorities blocked websites, jailed scores of people over allegations of terrorism and arrested a prominent comedian.Protesters demanding the release of Deniz Goktas, a comedian who was arrested after making jokes about President Recep Tayyi

B Ben Hubbard and Safak Timur

Efforts to Help Smokers Quit Stall Under Trump

The C.D.C.’s tobacco control office has been shut for more than a year. After its most prominent antismoking campaign went off the air, calls to 1-800-QUIT-NOW lines have plummeted.

C Christina Jewett

Zyn’s Popularity Has Tobacco Companies Racing to Cash In

The makers of nicotine pouches are building new plants and expanding to meet demand. While influencers claim health benefits, experts warn the products can be highly addictive.Nicotine pouch sales are projected to increase to more than $40 billion worldwide by 2033 from $6.9 billion in 2025, one ana

M Murray Carpenter

An Email. A Knock at the Door. A Suit Alleges a Threat to Free Speech.

A man sent a scathing note to an immigration official after two demonstrators were killed. A lawsuit says agents who came to his house were trying to intimidate him.Federal agents visited the Rochester, N.Y., home of David Streever, who had sent a caustic email to a top immigration official. They ca

D David Andreatta

Inside Bath & Body Works’ Fragrance Factory

“Japanese Cherry Blossom” has brought in $1.5 billion over the last 20 years. Can the company’s close-knit network of suppliers come up with the next big thing and improve sales?

F Farah Stockman