- Ukrainian forces conducted counteroffensive operations in at least three sectors of the frontline and made gains on June 19.
- Russian forces conducted drone and missile strikes targeting southern Ukraine on June 19.
- US Secretary of State Antony Blinken reported that the Chinese government reiterated that it is not providing, and will not provide, lethal assistance to Russia for use in Ukraine.
- US defense manufacturer Lockheed Martin indicated that it is ready to help Ukraine fly and maintain Lockheed’s F-16 fighter jets if NATO states agree to send them to Ukraine.
- Kremlin-affiliated Russian tech giant Yandex claimed that international sanctions against Russia prevented the company from providing the Russian Federal Security Service (FSB) with user data in compliance with a Russian security law, resulting in a significant fine.
- Russian forces made gains in the Kupiansk area and continued ground attacks along the Svatove-Kreminna line.
- Ukrainian forces continued counteroffensive operations while Russian forces conducted limited ground attacks near Bakhmut.
- Russian and Ukrainian forces conducted limited attacks on the Avdiivka-Donetsk City line and made marginal gains.
- Ukrainian forces conducted limited ground attacks along the administrative border between western Donetsk and eastern Zaporizhzhia oblasts.
- Ukrainian forces conducted limited ground attacks in western Zaporizhzhia Oblast.
- The Wagner Group continues efforts to expand its recruitment pool in the wake of significant losses in Ukraine.
- Russian sources claimed that a car carrying a Zaporizhzhia Oblast occupation official exploded in Simferopol, occupied Crimea.
WSJ: West, Ukraine prepare for next phase of offensive in spring 2024
Ukraine's attempt to swiftly rout Russian forces has stalled, leading strategists in Kyiv and the West to ready for a grinding war lasting months or years.