• Ukraine’s army chief has reported an escalation in Russian troop concentration in the Kharkiv region.
• Russia is reportedly deploying additional army units into the Kharkiv region from other parts of Ukraine to bolster forces.
• Ukraine has mobilized reserve troops and moved them into the Kharkiv area in an effort to counter the Russian offensive.

Russia conducted an array of aerial attacks on Ukraine with cruise missiles, drones and ballistic missiles, Ukraine’s air force said Thursday, while the chief of the army said Russia is increasing its troop concentration in the Kharkiv region where Moscow’s forces have made significant advances in a spring offensive.

Ukraine’s GUR military intelligence operation claimed that sea drones destroyed two Russian KS-701 patrol boats in the Black Sea off the Russia-annexed Crimean peninsula. Russian officials did not immediately comment on the claim.

The air force said the overnight attacks included eight S-300 ballistic missiles, 11 cruise missiles and 32 Shahed drones. All the drones and seven of the cruise missiles were shot down, the air force said but did not give other details.

KYIV’S FORCES ARE UP AGAINST A CONCERTED RUSSIAN PUSH IN EASTERN UKRAINE, A MILITARY OFFICIAL SAYS

In Kharkiv, Ukraine’s second-largest city, seven people were injured and a municipal services building caught fire in the attacks, regional governor Oleh Syniehubov said. Russian aerial strikes were also reported in the Khmelnytskyi and Dnipropetrovsk, but there were no injuries.

Ukrainian soldiers use a US Stinger air defense missile launcher on the front line in Zaporizhzhia region, Ukraine, on May 28, 2024. The chief of the army said Russia is increasing its troop concentration in the Kharkiv region where Moscow’s forces have made significant advances in a spring offensive. (AP Photo/Andriy Andriyenko)

Army chief Oleksandr Syrskyi said on his Facebook page on Thursday that Russia is bringing army units into the Kharkiv region from other parts of Ukraine to supplement forces in the two main focuses of fighting, the towns of Vovchansk and Lyptsi. Syrskyi said Ukraine has also moved reserve troops into the area.

Russia’s Defense Ministry said its air defenses shot down eight U.S.-made ATACMS missiles over the Azov Sea, which borders both Russia and Russia-held Ukrainian territory.

One person was injured by a drone explosion in Russia’s Belgorod region, which borders Kharkiv and comes under daily attack from the Ukrainian side.

A lengthy delay in U.S. military aid and Western Europe’s inadequate military production has slowed crucial deliveries to the battlefield for Ukraine, and Russia has exploited the delays to make advances in the Kharkiv region.

Russian missiles and bombs also have pummeled Ukrainian military positions and civilian areas, including the power grid.

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On Thursday, U.S. Secretary of State assailed Russian attempts to sow discord in democracies with misinformation after hinting the Biden administration may soon allow Ukraine to use American-supplied munitions to strike inside Russia.

In Prague for a NATO foreign ministers meeting, Blinken cited Moscow’s use of misinformation and disinformation, calling it a “poison” and signing an agreement with the Czech government to combat it.

A day earlier, Blinken said U.S. policy on how Ukraine deploys American weapons is constantly evolving, suggesting that Washington may rescind an unwritten prohibition on Ukraine’s use of them for attacks on Russian territory.

Although U.S. officials insist there is no formal ban, they have long made clear that they believe the use of American weapons to attack targets inside Russia could provoke an escalatory response from Moscow, something that Russian President Vladimir Putin has promised.