Johnson makes surprise visit to Kyiv, holds talks with Zelensky.

Kremlin spokesperson Dmitry Peskov noted that U.S. submarines "are always on alert," claiming that Russia is not interested in escalating tension between the two nations.

Ukrainian drones targeted the Tatsinskaya railway station in Russia's Rostov Oblast overnight on Aug. 4, local media reported.

"I am sincerely grateful to the Netherlands for their substantial contribution to strengthening Ukraine's air shield," President Volodymyr Zelensky wrote, saying this is "the first such step" among NATO countries.

A market source told the Russian state outlet Kommersant that Ukrainian attacks on oil facilities on Aug. 2 contributed to the price hike.

The attacks struck a residential building and a moped, killing three civilians in the Chuhuiv district. Local prosecutors are investigating the attack as a war crime.

The Russian Foreign Ministry said on Aug. 4 that it no longer considered itself bound by the moratorium due to recent actions by the United States.

A decrease in assault operations is "related to the regrouping of the relevant Russian units in order to eventually resume more active assaults on the island zone of the right bank of Kherson Oblast," military spokesperson Serhii Bratchuk told the Kyiv Independent.

"The soldiers on this front are recording the participation of mercenaries from China, Tajikistan, Uzbekistan, Pakistan, and African countries in the war. We will respond," President Volodymyr Zelensky said in a statement.

According to investigators, officials involved in the scheme allegedly received up to 30% of contract funds as kickbacks. Among those detained are lawmaker Oleksii Kuznetsov and former Luhansk Oblast Governor Serhii Haidai.

Beijing insists it will continue to secure its energy supplies based on national interests despite pressure from Washington and the threat of punitive tariffs.