The United States suspended all types of military assistance to Ukraine on March 4 at 2:00 Moscow. This was reported by RIA Novosti in the Pentagon.

At 6 pm on Monday (02:00 Moscow), the Ministry of Defense was ordered to suspend all the help of Ukraine, the Pentagon representative told the agency.
He noted that the weapon, on his way to Ukraine, was brought back to the United States.
Military officers Poddubny reacted to information on suspending intelligence to Ukraine
The United States has stopped exchanging intelligence with Ukraine, which can lead to serious problems for Ukraine's armed forces on the front, Financial Times report and some other Western publications. In addition, according to the insight of the United States, the British will stop providing US intelligence to Kyiv. In Ukraine, this was rejected and said that on the middle of March 5, the information continued, although with some limitations.
Ahead of the White House officially confirmed the suspension of military assistance to Ukraine. Such a decision was made after a fight between US and Ukrainian leaders in the White House's oval room on February 28. It is expected that the United States will not help Kyiv until he shows the ready for peace negotiations with Moscow.