According to the Washington Post, Moscow sent a diplomatic note, a step forward, warning that deliveries of “more sensitive” weapons systems from the US and NATO to Ukraine “pour oil” on the conflict there and could have “unpredictable consequences”. ». A spokesman said the State Department had not confirmed any diplomatic correspondence and made it clear that the United States would continue to send weapons to Ukraine. “What we can confirm is that, together with our allies and partners, we are providing Ukraine with billions of dollars in security assistance, which our Ukrainian partners are using to the best of their ability to defend their country from unprovoked aggression by Russia and its allies.” horrific acts of violence. “, Said the spokesman. The Russian embassy in Ukraine did not respond to a request for comment. The United States is preparing to send the last tranche of $ 800 million (10 610 million) in military aid to Ukraine, bringing the total to $ 2.6 billion since the start of the war. The Biden government also made it clear that it was sending increasingly heavy and sophisticated equipment, including helicopters, air and sea drones and 155mm long-range shells, while training Ukrainian soldiers in their use. The United States is also sending additional anti-tank and anti-aircraft missiles of the kind that have contributed to the war effort so far in Ukraine. The Ukrainians claim to have sunk the flagship of the Russian Black Sea Fleet Moskva on Thursday using Neptune missiles developed by Ukraine. The United Kingdom has promised to send more anti-ship missiles to replenish supplies. Military experts believe that Ukraine’s anti-ship missile systems are what have so far prevented Russia from attempting an amphibious landing around Odessa. It is not clear whether Moscow has sent similar diplomatic notes to European countries. On Thursday, German Vice Chancellor Robert Habeck appeared to back down in his demands earlier in the week for a supply to the Ukrainian army as soon as possible. Habeck voiced concerns about Russian retaliation. “Heavy weapons are synonymous with tanks and all NATO countries have so far ruled out the possibility of not becoming the same targets,” he told Politico. However, the Czech Republic has already sent T-72 tanks and armored personnel carriers, while the US is sending helicopters and shells.