Kyiv — A Russian missile strike on a market in an eastern Ukrainian city killed at least 17 people Wednesday, officials said, as U.S. Secretary of State Anthony Blinken arrived in Kyiv on an unannounced visit. Blinken's trip aimed to assess Ukraine's 3-month-old counteroffensive and signal continued U.S. support for Kyiv's efforts to drive out the Kremlin's forces as some Western allies are expressing worries about progress after 18 months of war, according to U.S. officials.

Associated Press journalists at the site of the missile attack in Kostiantynivka saw covered bodies on the ground and emergency workers extinguishing fires at market stalls, with blackened and mangled cars nearby. Minister of Internal Affairs Ihor Klymenko said 17 people were killed and another 32 were wounded. The Defense Ministry said the market was hit by a ballistic missile.

Crews were still searching the rubble for any trapped civilians.

CBS News correspondent Imtiaz Tyab said Blinken's visit was the first to Kyiv by such a senior U.S. official since the start of Ukraine's counteroffensive, and just hours before he touched down, Russia also aimed a barrage of missiles at Kyiv for the first time in about a week. Ukrainian air defenses intercepted those missiles, but residential neighborhoods were showered in debris.

Blinken's visit was expected to include the announcement of new military aid of between $175 million to $200 million. Another, larger U.S. military assistance package is expected later this week, as Ukraine's counteroffensive against Russia continues to make limited gains.

While Blinken said Wednesday that Ukraine's forces had made "good progress," Tyab said Ukrainian casualties have been rising amid criticism that the counteroffensive has become bogged down by poor tactics.  

After arriving in Kyiv, Blinken laid a wreath at the city's Berkovetske cemetery to commemorate members of the Ukrainian armed forces who lost their lives defending the country.

"We want to make sure that Ukraine has what it needs, not only to succeed in the counteroffensive but has what it needs for the long-term, to make sure that it has a strong deterrent," Blinken said during the visit. "We're also determined to continue to work with our partners as they build and rebuild a strong economy, strong democracy."

In a conference call with reporters, Kremlin spokesman Dmitry Peskov said U.S. assistance to Ukraine "can't influence the course of the special military operation."

Blinken was expected to meet with President Volodymyr Zelenskyy, as well as the country's prime minister and foreign minister, to discuss the ongoing counteroffensive and reconstruction efforts.

On the train journey to Kyiv, Blinken met with Danish Prime Minister Mette Frederiksen, also on an official visit, to discuss the war. Blinken thanked her for Denmark's leadership in a coalition training Ukrainian pilots on F-16s and for promising to donate the fighter jets to Ukraine, according to State Department spokesperson Matthew Miller.

Washington officials said there will be discussions of alternative export routes for Ukrainian grain following Russia's exit from the Black Sea Grain Initiative and its frequent bombardment of port facilities in the Odesa region, from which most grain is transported abroad. Those alternatives may include new overland routes, or ships hugging coastlines to keep out of international waters where they could be targeted by Russia's navy.

Other issues, including support for Ukraine's war-torn economy will be discussed, building on Blinken's June announcement in London of $1.3 billion in aid to help Kyiv rebuild, with a focus on modernizing its energy network, which was bombarded by Russia last winter.

Overnight, Russia fired cruise missiles at Kyiv in the first aerial attack on the capital since Aug. 30, according to Serhii Popko, the head of Kyiv's regional military administration.

Debris from a downed missile struck the premises of a business in Kyiv, causing a fire and damage to the company's equipment. No casualties were reported.

In the Odesa region, meanwhile, one person was killed in a Russian missile and drone attack that hit Izmail port. The attack damaged grain elevators, administrative buildings and agricultural enterprises, local authorities said.

The trip to Blinken's fourth visit to Ukraine since the war began, including one very brief excursion over the Polish-Ukrainian border in March 2022, just a month after the Russian invasion.

However, it will be the first time America's top diplomat spends the night in Ukraine's capital since he visited Kyiv in January 2022, before the invasion.

U.S. officials said Blinken's decision to stay overnight in Kyiv is intended to send a symbolic signal of American support for Ukraine as the war drags on.

Shared priorities will be discussed with the state of Ukraine's counter-offensive high on the agenda, a senior U.S. State Department official briefed reporters ahead of the trip, speaking on condition of anonymity in line with protocols.

Blinken's visit comes after some of Ukraine's allies have privately expressed concern that Ukrainian troops may fail to reach their objectives.

While the U.S. has been concerned by certain day-to-day battlefield setbacks, U.S. officials said, they are still generally encouraged by Ukraine's handling of the military situation, particularly its air defense capabilities in knocking down Russian drones aimed at Kyiv.

Blinken aims to get a view on how the counter-offensive is progressing and what kind of support is required in the current phase of the battle, including materials to break through dense Russian defense lines while the winter season looms. Air defense will also continue to be a priority, the official said.

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• Antony Blinken
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