Four major state-owned Chinese oil companies have suspended their purchases of seaborne Russian oil in response to the new sanctions imposed by the Trump administration on Rosneft and Lukoil, according to a Reuters report, citing anonymous trade sources. The suspension, if confirmed, would put Russia under major economic pressure to end its war on Ukraine. China is a key strategic partner of Russia. Beijing's large-scale oil purchases have aided Moscow through punishing Western sanctions related to its invasion of Ukraine. The four oil firms involved are PetroChina, Sinopec, CNOOC, and Zhenhua Oil, per Reuters.