According to CCTV news reports, local time on January 4, "Ukraine Pravda" quoted sources as saying that in the early morning of the same day, Ukrainian drones attacked the Russian Leningrad region trading port Ustyluga port. There was no immediate response from the Russian side.

    According to Agence France-Presse reported on January 4, Russia vowed on the 4th to carry out "retaliation" against Ukraine, because the Ukrainian army had launched an attack on Russia with the US Army Tactical Missile System (ATACMS) missile. This type of attack is seen by the Kremlin as a "red line" in the conflict.

    "[Russia] will retaliate against these actions by the Kiev regime supported by its Western guardians," the Russian military said in a statement. In recent weeks, Russian President Vladimir Putin has threatened to strike central Kiev in response to Ukrainian attacks with US-made ATACMS missiles or British Storm Shadow cruise missiles. But the Russians have never really implemented it.

    Earlier on Thursday, the Russian military said it had intercepted "eight" ATACMS missiles and "72 UAVs" the day before, targeting the Belgorod region on the border with Ukraine. However, the Russian military did not confirm whether the Ukrainian attack caused casualties and damage to facilities.

    According to the report, the Biden administration authorized the use of ATACMS missiles in Kiev in November 2024. After repeated attacks by Ukraine with ATACMS and Storm Shadow cruise missiles, Russia responded for the first time with an experimental weapon, Hazel hypersonic missiles, vowing to "respond" every time Ukraine uses long-range missiles to attack the Russian mainland.

    According to CCTV news, on January 4 local time, US media reported that US Secretary of State Blinken admitted that the US government had begun to provide military support to Ukraine before Russia launched special military operations. In this regard, the Russian Foreign Ministry responded that because of such moves by the United States and the West, one of the tasks of Russia's special military operations is the demilitarization of Ukraine.

    According to the New York Times, Blinken said that the U.S. government has been sending weapons to Ukraine since September 2021, and will again provide weapons support in December 2021, including air defense systems and anti-tank missiles. Blinken said the weapons were sent to Ukraine to ensure that Ukraine exercised its right to self-defense.

    In this regard, Russian Foreign Ministry spokesperson Zakharova issued a statement saying that Russia has repeatedly stated its position on the U.S. military support to Ukraine and NATO's long-term exercises in the Black Sea. It is precisely because of the above actions of the United States and the West that one of the tasks of the Russian special military operation is to demilitarize Ukraine and defend Russia's security.

    The Russian Defense Ministry issued a war report on the 4th that the Russian army controlled a residential area in the Luhansk region. Russian air defense systems intercepted eight US-made Army tactical missile system missiles and shot down 72 UAVs. The Russian army also hit a number of Ukrainian military airfields, drone assembly workshops and warehouses.

    On the same day, the General Staff of the Ukrainian armed forces released a morning battle information, saying that in the past day, the Ukrainian army repelled the attack of the Russian army in Volchansk, Kurahovo and other directions. The Ukrainian army also destroyed 23 Russian artillery systems, 107 unmanned aerial vehicles, and three cruise missiles.

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